cbush hypermesh. Only 1 Orientation system can be mapped to CBUSH CID. Practical Aspects of Finite Element. It relies on discretizing a continuum domain into finite elements. 先建属性cbush_kline,再1d-spring-cbush,再card edit选坐标系,若用全局坐标gid改成0 2016-08-05 hypermesh中的单元set怎样建立 6; 2016-10-07 hypermesh …. #101: How to determine tension/compression for a CBUSH between coincident nodes? For the CBUSH element, when connecting coincident grids, the 'state' of the element, as far as tension/compression can be confusing, since you cannot rely on the sign of the force. Restriction: Only available in the OptiStruct and …. 接触界面的区域大小和相互位置以及接触状态不仅事先都是未知的,而且是随时间变化的,需要在求解过程. Select end b of the spring element. This is the default directory for the HyperMesh command window. pdf,基于Hypermesh 的板簧悬架模型建立与验证 徐论意 (安徽江淮汽车股份有限公司,安徽 合肥 230601) 要:在车架强度分析过程中,板簧悬架模型的至关重要,其直接影响分析结果的准确性。本文利用前处理软件 Hypermesh 建立有限元模型,后处理软件 Msc. Here is my condition in Femap, help me please. your very own and general 1D cross-sections with HyperMesh. A blank in field 5 may be used to indicate a grounded terminal GB. HyperMesh Calculator The HyperMesh calculator opens when you right-click on any active numeric field. Step 6: Combining 1D Elements A typical bolt representation consists of a "wagon wheel" inside the two bolt holes. model Set App = feFemap () App. The solver it self is more capable than Nastran but it follows a rather complicated route sometimes. HyperMesh elements have two basic attributes - configuration (or config) and type. FEM analyses using Hypermesh with ABAQUS solver plus some follow on calculations using Mathcad 14. How to create Spot Weld in hypermesh in Abaqus. Most of working the steps can also be applied to CBAR and CBEAM elements, too. CBUSH是Hyperworks中最常用的弹簧单元,具有6个方向的刚度,属于Optistruct中的Bulk Data数据类型。用于模拟弹簧阻尼器以及各种零件之间的连接 . Largely the same (basic functionality) Some small differences and enhancements. I'm modelling a wing with longitudinal spar and transv ribs For the flange rib/skin bolted joint I don't know if it's better to use: 1) the CBUSH …. 沿着这个部分的中心位置切开,并按照弹簧的数量撒点(假定是10根弹簧,弹簧的刚度参数需要通过实验对标得到具体值) Step 3. 1 32位/64位 中文特别版(附授权破解文件+安装教程),MSC Nastran 2018破解版是目前最新版的专业有限元分析软件,也是世界上使用最为广泛的有限元分析软件之一,新版MSC Nastran 2018旨在提高效率和用户生产力,此主要版本引入新的材料属性,大型装配建模技术,增强的接触分析以及更高效的. The output is considered to be …. Element identification numbers must be unique with respect to all other element identification numbers. 首先启动软件,选择合适的模板,加载一个有限元模型,用于演示RBE2单元的使用,该模型如图所示。. I am just trying to check and change elements orientation (SHELL elements) in Hypermesh to align all the elements in the same direction, and I am not able to find how. 1) Using a coordinate system (CID) in the PBUSH (element property) with an ID greater than or equal to (>=) zero, or CID>=0. com Altair Engineering Support Contact …. Then go to Tools - equivalance put the gap for example 0. The first end of the spring element. This combination is valid for any structural solution sequence. In the Open Model dialog, open the plate_hole. 3 – Linear Static Analysis Setup There are some basic steps that the user needs to follow to setup a static analysis for OptiStruct, we will describe these steps using HyperMesh …. Display CBUSH Coordinate System - HyperMesh - Altair Products - …. For example, HyperMesh assemblies or …. CAE演習 <有限要素法のノウハウ(基礎編)> 2.モデル化・要素の選択. HyperMesh New Features and Enhancements Engineering Solutions: Aerospace Profile • Create and Review Zero Length Elements This tool creates zero length elements (CELAS*, CGAP, CMASS* and CBUSH…. MSC Nastran Quick Reference Guide MSC Nastran 2014 Quick Reference Guide Main Index Corporate Europe, Middle East, Africa MSC Software …. I'm currently working on a project that involves creating a very large DFEM to the level where we intent to model rivets as CBUSH elements. The output is considered to be in units of G 2 /Hz, while the G rms value is in G. The beam is held together with a RBE2. PDF Design and calibration of a test rig for shimmy damper. Select all the nodes to be considered, enter a value for the Coincident Tolerance, or leave the default value and click OK. Connectors: Terminology • Connect When: – Specifies when the …. Rigid elements, spring/ cbush elements: 2D Meshing ↑ 2D meshing is what Femap is best at Hypermesh does seem to be more akin to Femap than Simcenter as an FEA pre/post-focused product. Springs can translate to CELAS or CBUSH in OptiStruct/Nastran or *SPRING in Abaqus. It gives the frequency range requested in the EIGRL card, 0-2000Hz. Step 1: Start HyperMesh in the OptiStruct user profile and open the HyperMesh model file 1. If you select the no vector option or you want to specify an offset for any of the CBUSH elements, follow these procedures: Click. I have two questions concerning the PBUSH card which I am using during a frequency response analysis: 1. Stress singularities, stress concentrations and mesh convergence. 1 密封条采用rbe3-celas1-rbe3方式建模,为了生成的celas单元为cbush单元,需要将spring 6 1改为spring 6 0,同时需要勾选single system,以便于建cbush同时建立赋予坐标系,建模如下图1所示:. The first thing that needs to be done is to save this HyperMesh macro in one of your directories. Creates RBE3 elements for the head and CBUSH element for the body. Open the HyperMesh model file, 10a_Composite_Skin. Error using Cbush - Error using Cbush - Altair HyperMesh - Altair Products. 抗扭拉杆是前置前驱TRA悬置系统 中 在后悬置 中 用于限制动力总成在各种扭矩工况下,确保动力总成位移和转角满足设计要 …. Altair® OptiStruct® is the original generative design tool. 接触在力学过程中常常同时涉及三种非线性,大变形引起的材料非线性和几何非线性以及接触界面的非线性。. How to select CID during CBUSH creation - HyperMesh - Altair Products - …. The CBUSH would be co-linear with the edge, so that the lack of drilling stiffness in the shell elements wouldn't cause issues. 想问一下关于Hypermesh的CBUSH的问题;1、建立CBUSH时低版本(12. The scheme aimed to improve the performance of the mounting system in order to produce better powertrain overall NVH performance. BASIC ANSA - Geometry Cleanup and Shell Meshing BETA CAE Systems S. Creates bush (CBUSH) elements between shell and/or solid elements in order to connect them …. Altair Engineering HyperMesh …. String, Rod, Bar, Shaft, Beam * String does not transmit or resist the bending. The CBUSH connection are used to represent the weather strip that are installed in the . constraints right you must use the constraint set and the CBUSH card together. If playback doesn't begin shortly, . 本发明公开了,该方法采用一种三维间隙单元来对角接触轴承进行有限元分析的简化,在三维绘图软件solidworks中画出轴承的立体模型。在有限元前处理软件Hypermesh …. of the advantages of using the CBUSH element over CELASi elements. The CAD files and renderings posted to this website are created, uploaded and managed by third-party community members. 在 HyperMesh 中,边界条件存放在叫做 load collectors 的载荷集 Loadcollectors 可以通过在模型浏览器中点击右键来创 LoadCollector。 经常(尤其是刚开始需要一个 load collector 来存放约束(也叫做 spc-单点约束 另外一个用来存放力或者压力。 Cbush 元的自由端的全部自由度都. The CBUSH element as a replacement for scalar element for static analysis. press F4 to measure the distance approx. • Prepared FE model via Hypermesh and linear static analysis are performed using MSC Nastran. I add CBUSH element with attached PBUSH property and I get the error below. OverviewofNonl inearAnalysis basedonthemodified-Newton'smethodcombinedwithoptionalexpeditiousmethodssuchasthe quasi-Newton(BFGS)updateandthelinesearch. Workbench is like a shell to Ansys solver. The element property row is defined by [n1 n2 MatId ProId EltId x1 x2 x3 CID S OCID S1 S2 S3] The orientation of the spring can be specified, by …. 2 Bush 单元(弹簧阻尼单元) Cbush可连接两个重合或者不重合的节点,或者一个节点。 通过pbush 属性赋 值:B1~B6,六个自由度阻尼值Ge:法向结构阻尼 SA,ST:平动、转动应力恢复系数 EA,ET:平动、转动应变恢复系数 Cbush1D支持大变形,可定义力-位移之间的非. CFG optistruct 5 sealing *filter spot *head rbe3 1 0 *body 0 spring 6 1 cfg_optistruct_5_sealing. This tool is accessible in HyperMesh …. CBUSH Example with Solid Elements: Constraining the CBUSH is the biggest challenge to its use To get the r ved. Individually I am able to mesh the parts with tetra elements but there is no connectivity …. USER FATAL MESSAGE 315 & 316 (IFPDRV). The SM is defined as a matrix that relates the stresses at the top and bottom of its layer to the displacements at the top and bottom,(231)[σj−1σj]=Kj[uj−1uj]where K is the stiffness matrix…. 016基于响应面与遗传算法的前副车架轻量化优化1,21,21,2陈俊男,陈吉清,兰凤崇(1. Copyright © 2009 Altair Engineering, Inc. 其次,用Hypermesh软件完成减振器的网格划分的同时,基于测试所得等效动刚度、阻尼参数,用CBUSH单元模拟减振器垂直方向的刚度、阻尼特性。减振器中的橡胶元件的刚度特性也用CBUSH模拟。. This method is typically used for CBUSH elements with coincident nodes. Altair HyperMesh parts and assemblies; The user can leverage this information when setting up their project. Methods for Modeling Bolts in the Bolted Joint Jerome Montgomery Siemens Westinghouse Power Corporation, Orlando, FL Abstract Modeling bolts for three-dimensional finite element applications have, and still continue to raise questions. sh for the 64 bit Linux version), select the CFD option from the pop-up launcher so that ANSA begins with. Select all the nodes to be considered, enter a value for the Coincident Tolerance, or leave the …. This will be the simplest way to deal with this problem. New Warning checks: • Material Rho is not defined • Material Nu is zero The RADIOSS (Bulk Data) User Profile in HyperMesh has been removed, and is fully replaced by the. 2D Synchronous Technology lets you select a set of sketch curves based on geometric relationships such as tangency or parallelism and move, offset, resize, or delete the entire set. I'm modelling a wing with longitudinal spar and transv ribs For the flange rib/skin bolted joint I don't know if it's better to use: 1) the CBUSH (PBUSH: K1,K2,K3,K4,K5 high and K6=0 with 3 normal to PSHELL). 可以通过Hypermesh中的1D面板下的masses命令创建CBUSH弹簧单元。. Can have stiffness in all 6, or any combination. Then the element x-axis is along T1, the element y-axis is along T2, and the element z-axis is along T3 of the CID coordinate system. Step 6: Combining 1D Elements A typical bolt representation consists of a “wagon wheel” inside the two bolt holes. Thank you Amique for your answer. Cannot define CBUSH orientation - I've successfully used HM in the past (probably v14 or 2017) to define a CBUSH element with correct . Guide to Design Criteria for Bolted and Riveted Joints. In this step, you will open the model file and view it in HyperMesh. Reduced the time required to model CBUSH …. User information: See Bulk Data entry description in Section 5 of the NX NASTRAN. feAppMessage ( FCM_COMMAND, "Blake's Custom API Script: Convert RBE3 into RBE2 (DOF. COMBIN14 具有 1 维, 2 维或 3 维应用中的轴向或扭转的性能。 轴向的弹簧-阻尼器选项是一维的拉伸或压缩单元。 它的每个节点具有 3 个自由度: x,y,z 的轴向移动。 它不能考虑弯曲或扭转。扭转的弹簧-阻尼器选项是一个纯扭转单元。 它的每个节点具有 3 个自由度的: CAE , 有限元分析 CAE , 有限元. Creating zero length CBUSH elements (for RBE3 support) - Creating zero length CBUSH elements (for RBE3 support) - Altair HyperMesh - Altair Products. Hypermesh • create meshing of different parts and components. Create Elements Between Coincident Nodes. *COUPLING/*DISTRIBUTING constraints are converted to RBE3 elements. Has built-in scripting language, a Python-API, uses Distene's. Convert RBE3 to RBE (DOF 123456) 'This tool will convert multiple RBE3 elements into RBE2's with DOF 123456 'This tool is compatible with FEMAP …. HyperMesh writes your HyperMesh database as a Nastran ASCII input deck. In this month’s featured tip & trick, Eric Larson will explore the mid-surfacing tools available in HyperMesh …. 1D Elements - Altair University. stat fichier sur le déroulement du calcul (temps passé dans les différentes sous-routines). 提供CBUSH单元介绍文档免费下载,摘要:CBUSH单元介绍BUSH单元是Nastran中经常使用的一种连接单元,它是一种通用的三向弹簧-阻尼器单元,可定义多至六个方向(三个平动和三个转动)的刚度和阻尼。一般情况下,我们都把它看作具有三个方向或者六个方向(考虑三个方向的转动刚度)的. In order to define the cross-section we again make use of HyperBeam and the OptiStruct library. Lyon, Auvergne-Rhône-Alpes, France. A grounded terminal is a point whose displacement is constrained to zero. To make frequency dependent the PBUSH need only have an associated PBUSHT Bulk Data. 《 hypermesh划分的壳单元(shell63),对于两个component上的单元,可以做一个连接么? 根据你分析的问题,可以用:1、焊接. Rotational Stiffness around the fastener axis K 4 can be fixed to 100. 关于CBUSH模拟橡胶衬套?【hypermesh吧】_百度贴吧. Hyperworks、Nastran、Abaqus与ansys的区别_weixin_…. • Perform hand calculation and Finite Element Analysis for static on test gallies. Specify cross sectional properties (with HyperBeam) 12. PDF HyperWorks Release Notes. Checks if the CBUSH spring element of zero length has the element coordinate system, CID defined. In many situations several elements are capable of modeling the same structural effects. CBUSH单元介绍_word文档在线阅读与下载_文档网. COMBIN14 具有 1 维, 2 维或 3 维应用中的轴向或扭转的性能。 轴向的弹簧-阻尼器选项是一维的拉伸或压缩单元。 它的每个节点具有 3 个自由度: x,y,z 的轴向移动 …. User can create composite models based on ply and laminate definitions. 提供cbush单元介绍文档免费下载,摘要:出现上面支反力的情是和bush单元的计算原理有关,下面对此作一介绍。3bush单元的计算原理一般情况下,定义一个bush单元需要2个节点,连接成一个线单元。形式虽然和普通的弹簧单元一样,但bush单元和弹簧单元的计算方法却有所不同。. The first is advanced geometry clean-up and meshing techniques. #101: How to determine tension/compression for a CBUSH between coincident nodes? For the CBUSH element, when connecting …. Ansys Workbenchはサンプルとして材料物性値をいくつか備えていますが、その種類は十分とは言えません。. node of the CBUSH element is then constrained with respect to all. Second way: Define a group in AFM with the grid point selected by label. HyperMesh does not write out more than 8 characters for IDs, so if you have more HyperMesh will write out ***, which fails the solver. by using cbush elements for each joint. Once you select both end a and end b, HyperMesh …. The powertrain with its mounting system was modeled using ‘HYPERMESH’ finite elements software package. 在 HyperMesh 中,边界条件存放在叫做 load collectors 的载荷集 Loadcollectors 可以通过在模型浏览器中点击右键来创 LoadCollector。 经常(尤其是刚开始需要一个 load collector 来存放约束(也叫做 spc-单点约束 另外一个用来存放力或者压力。 Cbush …. In this case, connection setups like RBE2, RBE3-HEXA-RBE3, RBE3-CBUSH …. 为了创建 cbush 单元,首先要切换对应的默认单元类型 celas 到 cbush,引用一个属性(也可以 以后再指定),并选择弹簧单元的两端节点。dof1-6 选项的选择不起作用。 cbush …. 本文档如对你有帮助,请帮忙下载支持!cae分析流程一、3d建模:在三维模型在装配车架上零部件。二、抽取中面:在catia中,对车架纵梁、纵梁加强板、横 …. To specific a random vibration is usually is used the ASD (acceleration spectral density). In this tutorial, we'll use Femap to go through the steps of creating and setting up a finite element model, analyzing it with NX Nastran, and reviewing the results. Ki Nominal stiffness values in directions 1 through 6. Of elements and nodes for a solver to apply the mathematical functions on it. The head elements project and connect to the nodes of the adjoining shell elements. Open a model file by completing one of the following: Clicking File > Open > Model from the menu bar. 如下图所示,模型中的两个圆孔均用RBE2刚性单元与中间的独立节点相连接。. Hypermesh; how to select elements or nodes by ID 21 Feb, 2015 21 Feb, 2015 finiteelementworld hypermesh One of the first issues that came to our mind when working with Altair Hypermesh is the way in which elements, nodes …. WHAT IS THE FINITE ELEMENT METHOD? • The Finite Element Method (FEM) is a numerical approximation method. A script in hypermesh to assign displacement & CID to CBUSH element was created using Tcl/Tk for NVH team. Again, this model uses the CBUSH to define the stiffness of the bearing and is rigidly connected to the shaft with a RBE2 in the same way as model A. The purpose of this functionality is to define property values for a generalized spring and damper structural element which can be dependent on Frequencies. So I tried to export it in Hypermesh and tried to mesh the parts. HyperMesh is the market-leading, multi-disciplinary finite element pre-processor which manages the generation of the largest, most complex models, starting …. The CBUSH element contains all the features of the CELASi elements plus it avoids the internal constraint problem. 1_hotfix needs be installed on top of HyperWorks 2017. • Interpretation of mechanical drawings. 3 different methods to create 1D bolts using Hyperme. CBUSH是Hyperworks中最常用的弹簧单元,具有6个方向的刚度,属于Optistruct中的Bulk Data数据类型。. HyperMesh is a highly capable simulation software, and in this module, you will learn about the various tools and features that HyperMesh has to offer. I defined a RB3 from shaft outer surface which is in contact with bearing and other RB3 from support inner face that is in contact with the inner bearing face. On realization of the ply and laminate data, ply based model will be converted to zone based composite model. Creat CBUSH with cylindrical coordinate - HyperMesh - Altair Products - …. June 2, 2015 10 Comments Written by M. HyperMesh Desktop Introduction Pre-processing for Finite Element Analysis altairhyperworks. cae 分析流程 一、3d 建模:在三维模型在装配车架上零部件。 二、抽取中面:在 catia 中,对车架纵梁、纵梁加强板、横梁及横梁连接板等车架系 统本 …. If a shell connects to a solid, what happens to those extra rotational. For base model initial shear modulus is calculated from Classical Theory of Bushing [2] as 0. hypermesh不过是前处理,radioos就是hm的求解器,也是非常强大的可以处理很多非线性问题,最重要的是hm的优化功能强大。比那几个好一些 …. Discover HyperMesh functionality with interactive tutorials. Read the CAD file Start ANSA (e. Methods for Modeling Bolts in the Bolted Joint Jerome Montgomery Siemens Westinghouse Power Corporation, Orlando, FL Abstract Modeling bolts …. 提供CBUSH单元介绍文档免费下载,摘要:CBUSH单元介绍BUSH单元是Nastran中经常使用的一种连接单元,它是一种通用的三向弹簧-阻尼器单元,可定义多至六个方 …. The use of CBUSH element has all advantages over CELASi elements. CROD Elements In the following the general modeling building process based on CROD elements is documented. I have the following csv file" CBUSH_ID,Diameter 1104,0. 110 via any of the following locations: • Tools menu > Auto-Contact. Automating CBUSH creation in large model. In this module, you will study the meshing software, HyperMesh. Delve into the Nastran CBUSH Element Orientation definition, its impact on element forces, Coincident Vs Non Coincident Nodes, . he/him Member Since 5 years ago New York, NY 4 follower. In this video, we will focus on modelling a Bolt Connector using Hypermesh to join different components. CBUSH是Hyperworks中最常用的弹簧单元,具有6个方向的刚度,属于Optistruct中 . 40818 (Aerospace) 10 May 10 15:12. For example, CBUSH is of "spring" config in the Nastran user profile and CONN3D2 is of. Altair Engineering Advanced HyperMesh 1 Preface Who should attend This course is designed for students who have attended HyperMesh Basic Training and have a working knowledge of HyperMesh. Script Author: Ian Rivard Preface: Cbush orientation is very important for the stiffness of your model. Then, and this is the step that most people miss, is that one 1– All Rights Rese needs to change the Formulation. o Automatisierung der laminierten Übergänge in Altair HyperMesh 2. Simcenter Femapは、優れた操作性を実現した先進の日本語グラフィカルユーザーインターフェイスを搭載しています。. The solver defined type for the HyperMesh config. Linear (Single Order) and Quadratic (Double Order) Elements: As we discussed the major element types are 1D, 2D and 3D and all these elements are further segregated based on mid-side nodes availability. 提供CBUSH单元介绍word文档在线阅读与免费下载,摘要:各固定点支反力的情况如下:疑问:根据一般的力学原理和弹簧理论,板中心的作用力应该均匀分配到四个角点。因此四个角点应该只有Z向的支反力,为何还出现其它方向的支反力?. Modal updating is a method to correct the dynamic behavior of FEM which contain uncertainties because of the boundary conditions, …. Examples of Consistant Systems of Units for Structural Analysis: System of Units: Input: Output: Length: Force: Elastic Modulus: Mass: Mass Density: WTMASS Param. For example, HyperMesh assemblies or include files can be converted into individual structures. The PSD output for GRIDs 101(T2) and 149(T2) from the run's. 一般的にヤング率やポアソン比といった線形構造解析で用いられる材料特性に. hm This model contains a mesh of the aircraft door surround composite skin within the component Skin. 复杂的会在catia里建好了,然后转成igs 或者tps 文件导入 hypermesh hypermesh11. CBUSH Example with Solid Elements: The CBUSH element is selected as a Spring/Damper r ved. Welcome to the Getting Started with Femap tutorial series. 用於類比彈簧阻尼器以及各種零件之間的連接關係(固接,鉸接及各種其它運動副)。 Cbush單元比較複雜,OptiStruct中的關鍵字如下. 0 (Real or RIGID) B Flag indicating that the next 1 to 6 fields are force-per-velocity damping. In this tutorial, you will learn how to define a model in HyperMesh, apply boundary conditions in HyperMesh…. In the following the general modeling building process based on CROD elements is . Click the beamsec button and pick the new …. If you have the number of grid point in f06 file, use "Node/Element information". View new features for OptiStruct 2021. 弹簧单元是ABAQUS的特殊功能单元,可以直接定义结点受到的力与结点(相对)位 …. 提供从hypermesh到nastran——模态和瞬态动力学分析关键步骤设置word文档在线阅读与免费下载,摘要:从hypermesh到nastran——模态和瞬态动力学分析鼓捣 …. Responsible for the structural analysis and design of A350XWB-1000 and A380 Wing parts in a high-pressure work environment where efficiency and proper teamwork are essential to meet aggressive. various types supported for welds are, spring, plot, hexa8, rod,. 提供cbush单元介绍word文档在线阅读与免费下载,摘要:出现上面支反力的情是和bush单元的计算原理有关,下面对此作一介绍。3bush单元的计算原理一般情况 …. Gap Element using non-linear analysis. It orients the seal CBUSH elements properly. 0 (Real or RIGID) B Flag indicating that the next 1 to 6 fields are …. Connectors: Terminology • Connect When: - Specifies when the link. Examples of Consistant Systems of Units for Structural Analysis: System of Units: Input: Output: Length: Force: Elastic Modulus: Mass: Mass Density: …. • meshing of 3-D components like a piston, wheel, crankshaft, Cylindrical block, Aircraft wing. Hello every one ,This video fof How to create Spot Weld in hypermesh in Abaqus solver ,check below link for how to create seam weldhttps://youtu. The limit for the main structure was 165MPa. When a CBUSH element is defined, there are two main methods to define its orientation. Why did we create this guide? We created this guide for anyone that is trying to learn the basics of Femap. Nastran CBUSH Element Orientation – Element Orientation Definition. 14023 full license 100% working tmg v11. Clicking on the Standard toolbar. Verbindung: Nieten von Laminaten o Einarbeitung in die HUTH-Formel zur Bestimmung von Nietsteifigkeiten o Automatisierung der Nietmodellierung in HyperMesh …. It's common to have a coordinate system for each cbush, but perhaps a simpler approach if you don't need to specify directions inside the shear plane is to simply make the cbush …. • Opens the Export browser allowing specification of directory and name • Recent Files: A listing of HyperMesh …. Answer (1 of 13): The main difference is in loading and behaviour. 1mm then click on preview equivalnce. processing analysis is performed using Hypermesh. Rigid elements, spring/ cbush elements: 2D Meshing ↑ 2D meshing is what Femap is best at Hypermesh does seem to be more akin to Femap than Simcenter as …. Frequency Dependent CBUSH Properties can be Defined With the PBUSHT Data (Tips & Tricks) By Matthias Goelke. Instead of using Cbush grounded, I used cbush 1d element. Usability enhancements make it easier to. The mesh was generated using HyperMesh commercial software. Voir le profil de Marie Diagne sur LinkedIn, le plus grand réseau professionnel mondial. The model appears in the graphics area. MSC Nastran Quick Reference Guide MSC Nastran 2014 Quick Reference Guide Main Index Corporate Europe, Middle East, Africa MSC Software Corporation 4675 MacArthur Court, Suite 900 Newport Beach, CA 92660 Telephone: (714) 540-8900 Toll Free Number: 1 855 672 7638 Email: [email protected] MSC Software GmbH Am Moosfeld 13 81829 Munich, Germany Telephone: (49) 89 431 98 70 Email: [email protected]. Connectors: Terminology • Connect When: – Specifies when the link. connections bolt meshing tutorial hypermesh: Like. To enabled additional conversion options, click Conversion Options. Department of Management and Engineering Master of Science in Mechanical Engineering LIU-IEI-TEK-A—12/014446-SE FE-modeling of bolted joints in structures. The "config" defines the basic geometrical shape of an element. The bulk data section begins with the BEGIN BULK statement. difference between the module and a panel is the additional menu layer. You can now use a T-Cutter to machine slots, grooves, and underneath ledges. CBUSH | Search | Autodesk Knowledge Net…. Quartus has licenses for both NX/Nastran and MSC Nastran. What are the three columns in a. Restriction: Available in Nastran and OptiStruct. Due to the size of the model, the amount of rivets will be in the 1000's. HyperWorks Desktop Release Notes. 今天,小编要给大家分享的是如何使用Hypermesh 与 Nastran对内饰车身模型进行声振灵敏度分析,以及如何使用Hypergraph对分析结果进行后处理。. The model is checked for intersections and penetrations. Access this panel select Mesh > Create > 1D Elements > Springs. The accuracy of the solution greatly depends on. 本系列视频将分为OptiStruct分析教程和OptiStruct优化教程两部分。OptiStruct分析教程包括小变形有限元分析基础、小变形有限元分析进阶、大变形有限元分析 …. FE Modeling of Bolt using CBUSH and RBE2. CBUSH | A complete UBS Bloomberg Barclays US Liquid Corporates UCITS ETF exchange traded fund overview by MarketWatch. It is a challenging and repetitive task since I need to prepare CAE model for a fuselage mount hardware with thousands of rivets holes. CBUSH / PBUSH - CBUSH / PBUSH - Altair HyperMesh - Altair Products. hypermesh abaqus tutorial pdf hypermesh cbush hypermesh optistruct tutorial hypermesh boundary conditionsoptistruct examples hypermesh material properties optistruct manual optistruct output request. The PARTN command and the DMAP module MATMOD provide a convenient method for building a hypermesh…. Total assembly load is used for determining principle stress in FEA analysis. 0)就没有,想请问一下这里的自由度有什么作用?2、在建完CBUSH后赋予参考局部坐标系时CBUSH所在component的cardedit无法进入,我在属性PB. This advanced structural analysis course will impart the skills to help you prepare a full-model build-up. For example, CBUSH is of "spring" configuration in the Nastran user profile and. PATRAN, HM, HYPER: The HyperMesh …. This calculator is designed using "reverse Polish" …. 3 - Linear Static Analysis Setup There are some basic steps that the user needs to follow to setup a static analysis for OptiStruct, we will describe these steps using HyperMesh to setup the example described in section 1. 材料特性や荷重条件といった解析モデルの情報がツリー表示され、内容の確認や修正を素早く行うことができます。. Random vibration is motion which is non-deterministic, meaning that future behavior cannot be precisely predicted, and it is a characteristic of the input or excitation. 112_hotfix contains enhancements and bug fixes for HyperMesh, HyperGraph, HyperCrash and NVH (Packaged Solution Offering). 为了创建 cbush 单元,首先要切换对应的默认单元类型 celas 到 cbush,引用一个属性(也可以 以后再指定),并选择弹簧单元的两端节点。dof1-6 选项的选择不起作用。 cbush 单元的属性定义如下图所示。 上图是位移的云图。. It has all the advantages of a beam element with the ability to dial in spring values. Mid-surface Meshing in HyperMesh (Tips & Tricks) By Matthias Goelke. Nastran to Abaqus Conversion Mapping. A CBUSH element, referencing a PBUSH property with a single stiffness term, is equivalent to a CELAS1 or CELAS2 element, only when the elements have zero length. 5*50 F = 100/2 Simple Beam with fixed ends Turn On Equation Force Free‐Body‐Diagram () April 2011 Inspect F06 (MPCForce). fem file generated by Hypermesh (nastran format), it gives the following error when it comes to reading a CBUSH …. DISPLACEMENT (SORT2,PUNCH,REAL)=ALL. One of the ways that FEA analysts combat exorbitant run times is by simplifying some aspects of the analysis. It is defined in nastran using the CBUSH element card between two nodes, and the PBUSH property card. Frontal Crash Analysis of a Neon Car Model using Hypermesh and RADIOSS; Analysis of failure behavior of a plate using law - 1, law - 2, law - 27, and law - 36 material models and Johnson-cook failure card in Radioss. 采用常规方法需要建立cbush相应的坐标系,而且在Hypermesh中当前貌似不能镜像坐标系,当然通过其他软件也可快速实现cbush坐标系镜像, …. 先打开软件,求解器类型需要进行设置,以保证前处理软件使用该求解模版,进行模型的创造和设置。. This method eliminates the need to avoid internal constraints when modeling, OK?. 2 Release Notes 1 This tool creates zero length elements (CELAS*, CGAP, CMASS* and CBUSH) between. Verificare che sia attiva la voce closed solid e che il campo giallo sia impostato sulla voce surfs. 提供cbush单元介绍文档免费下载,摘要:出现上面支反力的情是和bush单元的计算原理有关,下面对此作一介绍。3bush单元的计算原理一般情况下,定义一个bush单元 …. Alternative way is to use a magnitude of 10^9 for K 5 and K 6. Cbush patran MAGIC ENTERPRISES RECHARGE. 为了创建 cbush 单元,首先要切换对应的默认单元类型 celas 到 cbush,引用一个属性(也可以以后再指定) ,并选择弹簧单元的两端节点。dof1-6 选项的选择不起作用。 cbush …. 提供CBUSH单元介绍word文档在线阅读与免费下载,摘要:CBUSH单元介绍BUSH单元是Nastran中经常使用的一种连接单元,它是一种通用的三向弹簧-阻尼器单元,可定义多至六个方向(三个平动和三个转动)的刚度和阻尼。一般情况下,我们都把它看作具有三个方向或者六个方向(考虑三个方向的转动刚度)的. out fichier texte informations sur le calcul (erreur(s), avertissement(s)). Thesis - SIMPLIFIED FINITE ELEMENT BEARING MODELLING - WITH NX NASTRAN I Sammanfattning Denna rapport är framtagen på uppdrag av ABB Robotics och arbetet har utförts i Västerås. 提供CBUSH单元介绍word文档在线阅读与免费下载,摘要:各固定点支反力的情况如下:疑问:根据一般的力学原理和弹簧理论,板中心的作用力应该均匀分配到四个 …. They are available for stress, heat transfer, acoustic, coupled thermal-stress, coupled pore fluid-stress, piezoelectric, magnetostatic, electromagnetic, and coupled thermal-electrical analyses (see Choosing the appropriate. Preferably to all widely used formats (Ansys, Aba, Nastran, LsDyna etc. o For example, shells have stiffness in 5 directions, 3 translations, 2 rotations for bending. • meshing of 2-D components like …. Once pre-processing is complete, OptiStruct that is a fast and accurate finite-element solver for RBE3 and CBUSH owing to the fact that simulations are faster and easier with 1D elements. I can find how to change normals and also how to change material orientations (material orientations doesn´t match with elements orientation). While the rest of the industry is still discovering how topology optimization delivers research projects, for the past two decades OptiStruct has driven the innovative, lightweight, and structurally efficient designs of the products you see and use every day. F06 file, if I search for FATAL I see the problem is related with the BCTPARM entry: *** USER FATAL MESSAGE 316 ( IFPDRV) …. Element Library Reference. Here is a starting point to understand the RBE2. 0 里面建模是这样的,geometryg功能下 有node,line surface solid 这一系列几何功能,先点 后先 再面. Limitations Even if this kind of modelling gives a good approximation, axial loads can only be calculated accurately using contact modelling (by introducing the CGAP element). The central node of the RBE3is attached to a CBAR/CBUSH element which represents the fastener, and that fastener crosses over from …. CBUSH 1-6, TXYZ RXYZ Stiffness in axial and 2 transverse directions. Reduced the time required to model CBUSH elements about 80% by developing a tool in C# based on. The buckling analysis will ignore zero-dimensional elements, MPC, RBE3, and CBUSH …. Hypermesh中怎么建立弹簧单元_峻望科技CADCAE咨询_新浪博客,峻望科技CADCAE咨询,. MPC184 converts to either a RBE2 rigid element or a CBUSH/PBUSH bushing element depending on the KEYOPT(1) value, as follows: KEYOPT(1) equal to 0 converts to RBE2 with constraint DOFs equal to [123] KEYOPT(1) equal to 1 converts to RBE2 with constraint DOFs equal to [123456]. When you press the Formulation button you have another screen 201, where you can change the Nastrantype to 1. cbush hypermesh Con che metodo fai la giusta selezione per miglior cbush hypermesh del 2022? Prima di tutto: Gli articoli più comperati e con i migliori …. Marie a 6 postes sur son profil. made with ezvid, free download at http://ezvid. If the nodes are coincident, then there is no gap between them. HYPERMESH CONTACT MANAGER ABAQUS MANUAL PDF >> READ ONLINE. Sign In or Create Account Forgot password. HyperMesh elements have two basic attributes – configuration (or config) and type. 16 HM-4310: Defining Abaqus Contacts for 2-D Models in HyperMesh. NOTE The DOF selection buttons are not needed to define a CBUSH element. Complete the definition for the connecting element properties in the Generate Connection Options dialog, and click OK to create all of the connecting elements at once. The latest Tweets from cbush (@Chiqchell). Here, you will set up a reduced car model and perform a frontal crash analysis using HyperMesh …. The beam is held together with a …. h3d fichier résultats pour Hyperview. - RBE2, BEAM, SHELL, SOLID, CBUSH, CQUAD, CHEXA, CONM1, CONM2. If only bulk data are present, the first two lines in the file should be the terminators for the executive control and case control sections, namely: For normal termination, end the Nastran input data with the line. 先建属性cbush_kline,再1d-spring-cbush,再card edit选坐标系,若用全局坐标gid改成0. • meshing of 2-D components like plates, Plastics, sheet metals. Boundary Conditions T he boundary condition is the application of a force and/or constraint. Zero-length CBUSH without CID. Ansys Workbenchはサンプルとして材料物性値をいくつか備えていますが、その種類は …. Dal Main menu, cliccare sul pulsante midsurface, in modo da far comparire il pannello di Figura 44. The CBUSH element is a generalized spring-damper structural scalar element connecting two noncoincident grid points, or two coincident grid points, or one grid point with an associated PBUSH entry. In the File field, navigate to your working directory an save the file as plate_hole. The bush element geometry is shown in Figure 1 below. Then I connected both RB3 centre node using CBUSH element. The property definition of the CBUSH element is shown in the following image 270 The figure above is a displacement contour plot. HM-4200: Set Up Nastran Static Analysis in HyperMesh. Element Summary – Small Strain Elements, Materials. There are things that Ansys doesn't do as well as Nastran, like acoustics, RBE3, 1d elements like CBUSH…. If 2 Orientation systems are present in the Abaqus card, HyperMesh only maps the first one. CATPart file containing CPD data for 140 plies which make up the composite skin of the door surround was also previously imported. 3 密封条采用sealing方式建模,并且勾选create vector,即采用矢量法建模,该方法因是采用矢量法,所以只需要建立单边,另一 …. In this module, you will learn the GUI of HyperMesh, various elements available in FEA like 1D, 2D, and 3D elements, how to choose the element depending on the geometry by covering topics such as:. HyperMesh results (RES) file Hyper3D (H3 D Altair FLX file Altair MRF file ABAQUS ODB file NASTRAN OP2 LS-DYNA D3PLOT and PTF files ADAMS GRA a ANSYS RST and RTH files DLM or LS-D Y FEMZIP DSY file DYNA DB file MADYMO KIN3 (KN3) and FAI files MARC T16 fil e NIKE3D N3PLOT file OptiStruct OP PAM-CRASH D SY file RADIOSS A00 7 DADS BIN file. res fichier binaire contient des résultats Fichiers générés. FE Modeling of Bolt using CBUSH and RBE2 - YouTube. 删除重复面的快捷方法,先F5-Mask掉一个,然后F2- Delete 掉其余 …. The powertrain with its mounting system was modeled using 'HYPERMESH' finite elements software package. All SPRING and DASHPOT related conversions (including JOINTC) map to CELAS1, CDAMP1, or CBUSH/PBUSH using the following guidelines: •. For example, tria3 configuration is a 3 node triangular element and hexa8 is an 8-node hexahedral element. While the rest of the industry is still discovering how topology …. Tools: CATIA, HYPERWORKS, MSC NASTRAN, MSC Patran, MS OFFICE. What is Hypermesh Analysis Software used …. The course will teach you FEA to help you find solutions for a given problem using ANSA's functionalities. Repeat steps 5 - 11 to create additional CBUSH elements. All degrees of freedom of the free node of the CBUSH element are constrained. 华南理工大学广东省汽车工程重点实验室,广东广州510640)摘要:在建立某款a级纯电动轿车的前副车架有限元模型的基础上,对该前副车架进行模态. sh for the 64 bit Linux version), select the CFD option from the pop-up launcher so that ANSA …. 25 When I import it in a Pandas dataframe using column specific types, it does …. In Addition: First way: In NX Simcenter there is a function to identify the position of a grid point in mesh. To run the Conversion macro, from the menu bar, click Tools > Convert > Nastran > To Abaqus. Supported OptiStruct connector types and property scripts. New Warning checks: • Material Rho is not defined • Material Nu is zero The RADIOSS (Bulk Data) User Profile in HyperMesh …. If we attach two shells with glue or bolt or something others, the vibration. cbush cbush1d cbend eb x x x x x cconeax e x x conmi x conrod e x x x x x crac2d e x crac3d e x cdampi x celasi x cfluidi cgap chbdyi x x x chexa e x x x x x cmassi x cpenta e x x x x x cquad4 eb x x x cquad8 eb x x x x x cquadr eb x x elementlibraryreference 1-5 o v riw of th el m n lbay. 汽车nvh仿真-声振灵敏度分析ntf_汽车nvh仿真_新浪博客,汽车nvh仿真,. if you use bushes then you can control teh stiffness of each bolt to represent the correct stiffness based on bolt type, plate material etc, the rigid element wont allow this, hence you would. Automating CBUSH creation in large model. When cbush type spring and rbe2 type rigid elements are used, this is the case for all current NVH Director supported realization types, …. In case of quadratic element, additional midside node in is defined in. 因为本次分析为声振灵敏度分析(NTF),所以这次分析除了需要建立一个内饰. The FEM (Finite Element Method) is a way of obtaining a of finding a solution to a physical problem. Building (manually) CBAR / CBEAM elements: Start the meshing process with Pull Down Menus Mesh Create 1D Elements Bars The element type set to CBAR 2. • Utility Menu > FEA > Tools: Auto-Contact. The hole is “supported” by a RBE3 element, which in turn is grounded to a CBUSH element with high stiffness values. Running OptiStruct from HyperMesh If you set up a finite element model in HyperMesh, you can run the simulation directly out of HyperMesh by going to the OptiStruct panel in the respective user profiles. Hypermesh is a preprocessing software where you divide the model into no. 1 hotfix contains enhancements and bug fixes for HyperMesh, HyperView, HyperGraph, HyperCrash, MotionView, NVH Director and HyperWorks Verification and Validation Harness (HVVH). The root mean square acceleration (Grms) is the square root of the area under the ASD. Display CBUSH Coordinate System - Display CBUSH Coordinate System - Altair HyperMesh - Altair Products. x64 Autodesk Crispin Engineer Pro v2016 SP4 win64 AVL 220 Win/Linux (x64) …. • Fatigue justification provided for design solutions to structures due to redesigning. How to add bushing element in a static analysis properly?. CBUSH SPRING - CBUSH SPRING - Altair HyperMesh - Altair Products. com 207MILENIUM HILLS Mobile: +817014135544 HIGASHI OOTAKE1-14-7 ISEHARA-SHI,KANAGAWA 259-1133,JAPAN CAREER OBJECTIVE: Looking for a challenging career and at the same time seeking a suitable position to utilize my skills and ability in the field of Aerospace Technology and Automotive. Example random output of peak values. Select the OptiStruct user profile 3. Select the menu command Mesh / Connect / Coincident Link. Experience and capabilities include: • Designing, Testing and Analysis of composite materials. It is a method of investigating the behavior of complex structures by. Because the stiffnesses at each end are now of similar magnitudes, the modes are mostly uncoupled, and the mass participation at the fifth mode is now negligible. fem fichier de données pour Radioss. 1 32位/64位 中文特别版(附授权破解文件+安装教程),MSC Nastran 2018破解版是目前最新版的专业有限元分析软件,也是世界上使 …. Understanding ANSA is essential for creating and modifying CAD/Geometry, meshing and connections. CBUSH or RBE2 for BOLT ? minny (Aeronautics) (OP) 4 May 10 01:26. Now I am doing in-place analysis for a mat-supported jack-up paltform, I want to use gap elements to simulate the real soil condition. The Auto Contact Browser organizes all interfaces found by the Auto Contact search, where you can review and modify them before accepting any changes. From the menu bar, click File > Export > Solver Deck. Tools : HYPERMESH – 2019, Optistruct 2019, Nastran, Mesh Works, Microsoft Office Client : Safran Seats United Kingdom Job Responsibilities: • Meshing of different components of seats with 1D elements, 2D elements, 3D elements (Tet and Hex). In this module, you will learn about the following topics Introduction to the Geometric Tool and the Tools Menu; Basic geometric tools. Section controls can be used to specify whether the connector elements should be deleted once they fail completely. CBUSH orientation is mapped from *CONNECTOR SECTION Orientation system. RADIOSS, MotionSolve, and OptiStruct PBUSH Bulk Data Entry PBUSH – Generalized Spring-Damper-Mass Property Description Defines the nominal property values for a generalized spring-damper-mass structural element. Description: Static strength substantiation of Airbus A350 XWB Gallies. feAppMessage ( FCM_COMMAND, "" ) App. 创建pbush属性,激活K_LINE选项,除了K3方向外的其余5个方向都定义为刚性,设置K3方向的刚度为5000。. The terms "force" and "displacement" are used throughout the description of spring elements. There are two ways to load a BDF; the long way or the short way. The mounts were modeled using bushing elements ‘CBUSH’. CID ≥ 0 overrides G0 and (X1, X2, X3). Description: Defines a generalized spring and damper structural element that may be nonlinear or …. • Flange and hanger are modeled using 3D HEXA elements and hanger rubber bush using 1D CBUSH …. Click the beamsec button and pick the new cross section. 0-110, ply and laminate entities are supported for ANSYS models. The buckling analysis will ignore zero-dimensional elements, MPC, RBE3, and CBUSH elements. CROD Elements This element “understands” tension and compression loads (axial forces) only. BASIC ANSA – Geometry Cleanup and Shell Meshing BETA CAE Systems S. , then you get the real part of data for Modes 1 to N for one nodes i to j, per listing. As shock absorber is mounted to. A non-zero length CBUSH assumes rigid body connections from the connection points, GA and GB, to the spring-damper location, as defined either by S or the OCID and Si fields. com | HyperWorks is a division of. And two shells with thickness 1t for each (say B and C). 说明:eid是cbush数据卡的编号;pid是pbush属性卡的编号;ga和gb是单元节点的编号;xi是在ga坐标系中表示的单元方向向量v的分量;g0是节点的编 …. Once you select both end a and end b, HyperMesh creates the spring element. Hypermesh; how to select elements or nodes by ID FINITE. HyperMesh Automation | Spider Creation around Bolt HoleI used to see my colleague creating spider elements (bar2) around a hole. 基于Hyperworks+ABAQUS弹簧单元(spring2)的创建及静力学分析. Se sei alla ricerca di cbush hypermesh ti basti renderti conto che comprendere quale articolo scegliere, più idoneo alle tue esigenze, può essere …. PDF Methods for Modeling Bolts in the Bolted Joint. For example, if you use CELASi elements and the geometry. Note that the frequencies listed in this table under CYCLES correspond with the peaks in the plot at the bottom of the page. I utvecklingen av industrirobotar så bantas strukturerna för att kunna ha höga. edu is a platform for academics to share research papers. • Logiciels : HyperMesh pour le maillage et Optistruct pour l'analyse modale. Set Cbush Orientation Perpendicular. The translator is designed to translate a complete Nastran input file. I used Femap and Hypermesh to prepare detailed finite element model (FEM) of external aircraft-mounted satcom antenna system for static and dynamic analysis. April 2011 Note: If the CBUSH element is not properly constrained, it will create mechanisms much like any other element. The "RMS over Frequencies" output is at the end of the Random results in the. The "type" defines the solver-specific element type of a particular configuration. 因为 节点的位移被孔上的独立节点和 spc 所控制。 解决方法是在非独立点上添加一个 Cbush 单元(0 长度和高 刚度 。约束 Cbush 单元 的自由端的全部自由度。 上图显示了 RBE3 的非独立节点如何与 长度的CBUSH 单元连接。 Cbush 元的自由端的全部自由度都被约束。. The mounts were modeled using bushing elements 'CBUSH'. Frontal Crash Analysis of a Neon Car Model using Hypermesh and RADIOSS. Guide to Design Criteria for Bolted and Riveted Joints Second Edition Geoffrey L. Meshing is performed in Hypermesh 11. Altair Engineering HyperMesh 8. 用于模拟弹簧阻尼器以及各种零件之间的连接关系(固接,铰接及各种其它运动副)。. A work around is to attach the dependent node to a CBUSH element (with zero . pdf,基于Hypermesh 的板簧悬架模型建立与验证 徐论意 (安徽江淮汽车股份有限公司,安徽 合肥 230601) 要:在车架强度分析过程中,板簧悬架模型的至关重要,其直接影响分析结果的准确性。本文利用前处理软件 Hypermesh …. Convert RBE3 to RBE (DOF 123456) 'This tool will convert multiple RBE3 elements into RBE2's with DOF 123456 'This tool is compatible with FEMAP version 10. If this parameter is omitted, the failed …. Individually I am able to mesh the parts with tetra elements but there is no connectivity between the nodes of the two regions. Creates bush (CBUSH) elements between shell and/or solid elements in order to connect them using rigid . Dal Main menu, cliccare sul pulsante …. Solids only have stiffness in the 3 translations. Before update After update CBUSH Node to Node Connector in Aerospace . Errors are debugged and the model is simulated. Section controls can also be used to specify a maximum value of the scalar degradation (damage) parameter, Dmax D max , and to specify the viscosity. Here, you will set up a reduced car model and perform a frontal crash analysis using HyperMesh software and solve the model using RADIOSS solver. Right click on the H Beam property card in the HyperMesh Model Browser and card edit the property. In Hypermesh, esiste una funzione preposta allindividuazione di tale piano, detto piano medio (midsurface). In this tutorial Step 1; Comments. RESUME PRABHU KRISHNAN Email:[email protected] HyperMesh is one of the most popular Finite Element Preprocessor used to generate meshes; of complex models. Let there is a shell structure with thickness 2t say (A). The short way instantiates the ``BDF`` class and the short way uses …. hypermesh cbush hypermesh boundary conditionsoptistruct examples optistruct manual hypermesh abaqus tutorial pdf hypermesh optistruct tutorial optistruct output request hypermesh material properties. We have created a macro in excel that can take two lists of corresponding nodes we can. 3 密封条采用sealing方式建模,并且勾选create vector,即采用矢量法建模,该方法因是采用矢量法,所以只需要建立单边,另一边可通过镜像得到,非常便捷高效,建模如下图3所示:. Prabhu_Krishnan_CAE_ENGINEER_Resume_20170205 1. • Logiciels : HyperMesh pour le maillage et Optistruct pour l’analyse modale. 汽车排气系统作为汽车乘坐舒适性的主要影响因素之一,其振动问题在业界得到了广泛的重视. It should be installed on top of HW 13. Proprietary Information of Altair Engineering. As the title says I am looking for a comparable, powerful program to hypermesh. 定义 bush 单元需要使用两种卡片: cbush (单元定义) 和 pbush (单元属性定义),简单说明如下: cbush 卡 - 定义一个广义弹簧-阻尼单元 定义一个广义的弹簧&阻尼单元,可以是非线性的或频率相关的 格式: cbush, eid, pid, ga, gb, go/x1, x2, x3, cid, s, ocid, s1, s2, s3 其中: cbush ….