如何使用simlab大幅减少传动系统建模时间powertrain

1、如何使用Simlab大幅减少传动系统建模时间耿永宁Mar. 15, 2013InnovationelligenceCopyright 2013 Altair Engineering, Inc. Proprietary and.sAltair:AReliable,Stable&SucsfulCompany持续、稳健的发展全球超过4,000客户全球超过40处投入大量资源致力于产品研发Copyright 2013 Altair Engineering, Inc. Proprietary and.s减少有限元建模时间发结构分析1 Month3 Days1k传动系统5 Hours3 DaysGenera

2、l Pre曲轴2 Hours活塞One DaySimlabOne Hour刹车系统1k6 Hours2ksNVH (动力传动系统)1 DayTime建模时间包括：CAD导入，几何，网格划分，分析设定与其他相比，有限元建模时间缩短到1/10，甚至更少Copyright 2013 Altair Engineering, Inc. Proprietary and.s特点和主要的CAD有直接接口（避免CAD格式转换导致的错误)基于特征的有限元建模功能带有几何信息的网格.基于特征的有限元建模方法.快速、高质量网格 .利用模板共享知识无需CAD的网格划分算法自动处理CAD错误（首先划分高质量网格）多种几何

3、工具，具有morphing功能通过创建/编辑几何来调整网格基于CAD几何，自动生成网格如：螺栓孔，圆柱，倒角， 通过模板共享知识大规模装配自动/手工生成六面体网格功能混合网格生成功能Copyright 2013 Altair Engineering, Inc. Proprietary and.s支持的CAD求解器CAEFEMbdf, fno, neuAutoCADvtkNEi Nastranbdf, nas, fno, op2Permas dat, uci,tI-Deas idi, xpkMSC Nastran bdf, blk, nas, dat, op2MSC Marc dat, t19V

4、RML wrlStlLS-DYNA kParaSolid V11-21xmt_txt, x_t, x_bAnsys ansStep 203,214isostp, stepAdventure Cluster dat, unvABAQUS ind, inc, odbProE Wildfire 2-5 prt, asmNX4-6 prtCatia V5R16-20CATpart, CATproductRadioss Bulk bdfCopyright 2013 Altair Engineering, Inc. Proprietary and.s带有特息的有限元模型CADm ab MeshPo, Ed

5、ge, Face, Body, Arc,Po, Edge, Face, Body, Arc,NURBS, Cylinder,llet etc.Element Edge, Cylinder Fillet etc.FiLCopyright 2013 Altair Engineering, Inc. Proprietary and.s特征识别CAD模型特征识别Cylinder Facecave Filletvex FilletPlane4 Edge Face在仅有网格的模型中保留特征4 Edge FaceCylinder Facecave Filletvex FilletPlaneNote: Onl

6、y if the mesh created in SimLab, features are identified.Copyright 2013 Altair Engineering, Inc. Proprietary and.s在CAD模型上直接划分可以得到高质量网格高质量网格所有节点都在几何上3D CAD保留有特息Copyright 2013 Altair Engineering, Inc. Proprietary and.s无需几何自动几何近似自动生成网格在导入CAD模型时，小碎面和CAD错误将被自动修复。小于给定最小尺寸单元的几何面会与相邻面融合。Copyright 2013 Altai

7、r Engineering, Inc. Proprietary and.s高质量倒角网格例:沿倒角方向的单元边长: 2mm特征角: 30如果倒角上单元的长宽比设为1，单元将尽量划为直角等腰三角形。如果这个值等于2或者更大，将会采用用户指定的单元尺寸和单元数。沿倒角方向的单元边长: 2mm特征角: 22.5沿倒角方向的单元边长: 3mm特征角: 22.5沿倒角方向的单元边长: 3mm #倒角弧度方向的单元数: 3Copyright 2013 Altair Engineering, Inc. Proprietary and.s行业的网格划分参数控制针对活塞座的网格参数设置IsoLine针对圆柱/半

8、圆柱的参数设置Valve seat PocketCopyright 2013 Altair Engineering, Inc. Proprietary and.s区域网格控制控制类型可以一起使用圆柱平面圆柱长方体Copyright 2013 Altair Engineering, Inc. Proprietary and.s自动合并倒角上的小面No MergeMergedCADNo MergeMergedCopyright 2013 Altair Engineering, Inc. Proprietary and.s网格参数模板基于几何ID，几何颜色，或者分组名称导入基于颜色的网格参数模板导入

9、基于分组的网格参数模板或SimLab中设定颜色在CAD直接生成网格导入分组的网格模板直接生成网格Copyright 2013 Altair Engineering, Inc. Proprietary and.s壁面网格划分网格生成时间: 75 秒网格生成时间: 180 秒网格生成时间: 90 秒节点数:100,000(二阶单元)节点数:200,000(二阶单元)节点数:120,000(二阶单元)通过面来设定的壁面网格通过体来设定的壁面网格通常的壁面网格Copyright 2013 Altair Engineering, Inc. Proprietary and.s壁面网格划分通过自动offse

10、t得到多层单元Copyright 2013 Altair Engineering, Inc. Proprietary and.s混合网格(六面体+五面体Penta+四面体)Hex8: 40,200Tet4: 88,000Node:63,000Tet10: 111,000 Node:188,000Copyright 2013 Altair Engineering, Inc. Proprietary and.s包络网格5mm 边长10mm 边长15mm 边长噪声分析模型结构分析模型Copyright 2013 Altair Engineering, Inc. Proprietary and.s删除

11、螺栓孔基于面 (选择面)基于体 (定义螺栓半径)Copyright 2013 Altair Engineering, Inc. Proprietary and.s删除，创建，编辑倒角编辑倒角半径创建倒角删除倒角Copyright 2013 Altair Engineering, Inc. Proprietary and.s生成，平移，编辑加强筋Copyright 2013 Altair Engineering, Inc. Proprietary and.s生成，平移，编辑加强筋移动加强筋编辑加强筋厚度Copyright 2013 Altair Engineering, Inc. Proprie

12、tary and.s删除小面/小倒角在网格中轻松删除小碎面一键删除平面中的所有小面Copyright 2013 Altair Engineering, Inc. Proprietary and.s创建装配面网格在网格基础上创建装配面在网格参数中定义装配面Copyright 2013 Altair Engineering, Inc. Proprietary and.s装配类型网格装配Mesh Assembly (Node Sharing, Duplicate Nodes)Finite Sliding, Small Sliding, Tiedtact, Tie接触nection, Press-fi

13、t tact etc.,RBE Bolt, Solid Bolt（Hexa Bolt, Tetra Bolt）螺栓连接Spring, Gap, Jo, MPC, Glue etc其他连接SimLab 可以通过以下方式进行装配：1.2.3.几何ID面或者边的颜色分组的名称Copyright 2013 Altair Engineering, Inc. Proprietary and.s支持装配的文件格式NEi Nastran bdf, nas, fno, op2AutoCAD vtk所有上面的CAD模型和求解器文件都可以混合用来创建装配模型。支持不同求解器之间的转换。 (如：导入ABAQUS文件，

14、导出为 Radioss 格式。)I-Deas idi, xpkRadioss Bulk bdf, op2VRML wrlPermas dat,tStlMSC Nastran bdf, blk, nas, dat, op2ParaSolid V11-21 xmt_txt, x_t, x_bStep 203,214isostp, stepMSC Marc dat, t19CAEFEM bdfProE Wildfire 2-5 prt, asmNX4-6 prtAdventure Cluster unvABAQUS ind, inc, odbCatia V5R16-20 CATpart, CATpr

15、oductCopyright 2013 Altair Engineering, Inc. Proprietary and.s座圈垫接触面创建Copyright 2013 Altair Engineering, Inc. Proprietary and.sRBE螺栓连接通过利用特征来节省时间镙钉帽类型自动RBE螺栓创建: 仅需选择轴承面的边线多种螺栓类型Copyright 2013 Altair Engineering, Inc. Proprietary and.sAutomatic Creation of RBE BoltComplex assembly mtact settingwill b

16、e defined by simply importing a file.nection Typenect two RBEs with one RBAR1.2. Separate RBE2 and RBAR and set pretentiono threeSupport Bolt Type:PretenBolt (Auto)32Copyright 2013 Altair Engineering, Inc. Proprietary and.s创建参数化的实体螺栓4种类型螺栓最多11个参数轴承表面网格可用于定义螺栓Copyright 2013 Altair Engineering, Inc. P

17、roprietary and.s创建螺栓/轴承通过选择轴承面自动创建螺栓时间:10个螺栓仅用1分钟(六面体或四面体)通过定义中心轴和位置，创建各种轴承Copyright 2013 Altair Engineering, Inc. Proprietary and.s自动接触设定基于以下方式:通过导入模板自动创建接触参数支持的接触类型: 1. tact Pair： Small Sliding, Finite Sliding 3. Tie Parameter: Adjust, Exten, Pressfit支持的求解器: 1. ABAQUS 2. Nastran 3. Permas: Add Wea

18、k Spring 4. Ansys： targe170,ta173,1745. NX Nastran2. Tiedtact（Free Roion）1. Body Name2. Group Name3. Elem Set4. Node SetCopyright 2013 Altair Engineering, Inc. Proprietary and.s可设定的接触参数如果勾选“AutomaticallyIdentifytacts”, 将基于所定义的参数在整个模型中自动探测并创建接触对SolverABAQUS、Nastrtan、Permas、Ansys、RadiossSurfaceeractio

19、nNo seperation, Hard, Tabular, Exponential, Gapductance, None.TrimYesor Notact detectBodies, Fa, Node sets. Elem Sets, Groupstact typeSmall Sliding, Finite Sliding, Tiedtact, TiePressfitClearance,erferencek SpringYesor NoEquationAxial, Tangentialtact FaPlane, Cylinder, Alltact SideBottom, Toptact PairsNode to Node, Node to Surface, Surface to SurfaceOthersFriction, Tolerance, Adjust,ExtenZone,Copyright 2013 Altair Engineering, Inc. Proprietary and.s例：复杂装配体的接触定义MSummary:Parts: 54Nodes: 2,100,000Elems: 1,200,000Define Press-fit bet block and bearing sn liner and cylinder block,