如何使用simlab大幅減少傳動系統(tǒng)建模時間powertrain

1、如何使用Simlab大幅減少傳動系統(tǒng)建模時間耿永寧Mar. 15, 2013InnovationelligenceCopyright 2013 Altair Engineering, Inc. Proprietary and.sAltair:AReliable,Stable&SucsfulCompany持續(xù)、穩(wěn)健的發(fā)展全球超過4,000客戶全球超過40處投入大量資源致力于產品研發(fā)Copyright 2013 Altair Engineering, Inc. Proprietary and.s減少有限元建模時間發(fā)結構分析1 Month3 Days1k傳動系統(tǒng)5 Hours3 DaysGenera

2、l Pre曲軸2 Hours活塞One DaySimlabOne Hour剎車系統(tǒng)1k6 Hours2ksNVH (動力傳動系統(tǒng))1 DayTime建模時間包括：CAD導入，幾何，網(wǎng)格劃分，分析設定與其他相比，有限元建模時間縮短到1/10，甚至更少Copyright 2013 Altair Engineering, Inc. Proprietary and.s特點和主要的CAD有直接接口（避免CAD格式轉換導致的錯誤)基于特征的有限元建模功能帶有幾何信息的網(wǎng)格.基于特征的有限元建模方法.快速、高質量網(wǎng)格 .利用模板共享知識無需CAD的網(wǎng)格劃分算法自動處理CAD錯誤（首先劃分高質量網(wǎng)格）多種幾何

3、工具，具有morphing功能通過創(chuàng)建/編輯幾何來調整網(wǎng)格基于CAD幾何，自動生成網(wǎng)格如：螺栓孔，圓柱，倒角， 通過模板共享知識大規(guī)模裝配自動/手工生成六面體網(wǎng)格功能混合網(wǎng)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帶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特征識別CAD模型特征識別Cylinder Facecave Filletvex FilletPlane4 Edge Face在僅有網(wǎng)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模型上直接劃分可以得到高質量網(wǎng)格高質量網(wǎng)格所有節(jié)點都在幾何上3D CAD保留有特息Copyright 2013 Altair Engineering, Inc. Proprietary and.s無需幾何自動幾何近似自動生成網(wǎng)格在導入CAD模型時，小碎面和CAD錯誤將被自動修復。小于給定最小尺寸單元的幾何面會與相鄰面融合。Copyright 2013 Altai

7、r Engineering, Inc. Proprietary and.s高質量倒角網(wǎng)格例:沿倒角方向的單元邊長: 2mm特征角: 30如果倒角上單元的長寬比設為1，單元將盡量劃為直角等腰三角形。如果這個值等于2或者更大，將會采用用戶指定的單元尺寸和單元數(shù)。沿倒角方向的單元邊長: 2mm特征角: 22.5沿倒角方向的單元邊長: 3mm特征角: 22.5沿倒角方向的單元邊長: 3mm #倒角弧度方向的單元數(shù): 3Copyright 2013 Altair Engineering, Inc. Proprietary and.s行業(yè)的網(wǎng)格劃分參數(shù)控制針對活塞座的網(wǎng)格參數(shù)設置IsoLine針對圓柱/半

8、圓柱的參數(shù)設置Valve seat PocketCopyright 2013 Altair Engineering, Inc. Proprietary and.s區(qū)域網(wǎng)格控制控制類型可以一起使用圓柱平面圓柱長方體Copyright 2013 Altair Engineering, Inc. Proprietary and.s自動合并倒角上的小面No MergeMergedCADNo MergeMergedCopyright 2013 Altair Engineering, Inc. Proprietary and.s網(wǎng)格參數(shù)模板基于幾何ID，幾何顏色，或者分組名稱導入基于顏色的網(wǎng)格參數(shù)模板導入

9、基于分組的網(wǎng)格參數(shù)模板或SimLab中設定顏色在CAD直接生成網(wǎng)格導入分組的網(wǎng)格模板直接生成網(wǎng)格Copyright 2013 Altair Engineering, Inc. Proprietary and.s壁面網(wǎng)格劃分網(wǎng)格生成時間: 75 秒網(wǎng)格生成時間: 180 秒網(wǎng)格生成時間: 90 秒節(jié)點數(shù):100,000(二階單元)節(jié)點數(shù):200,000(二階單元)節(jié)點數(shù):120,000(二階單元)通過面來設定的壁面網(wǎng)格通過體來設定的壁面網(wǎng)格通常的壁面網(wǎng)格Copyright 2013 Altair Engineering, Inc. Proprietary and.s壁面網(wǎng)格劃分通過自動offse

10、t得到多層單元Copyright 2013 Altair Engineering, Inc. Proprietary and.s混合網(wǎng)格(六面體+五面體Penta+四面體)Hex8: 40,200Tet4: 88,000Node:63,000Tet10: 111,000 Node:188,000Copyright 2013 Altair Engineering, Inc. Proprietary and.s包絡網(wǎng)格5mm 邊長10mm 邊長15mm 邊長噪聲分析模型結構分析模型Copyright 2013 Altair Engineering, Inc. Proprietary and.s刪除

11、螺栓孔基于面 (選擇面)基于體 (定義螺栓半徑)Copyright 2013 Altair Engineering, Inc. Proprietary and.s刪除，創(chuàng)建，編輯倒角編輯倒角半徑創(chuàng)建倒角刪除倒角Copyright 2013 Altair Engineering, Inc. Proprietary and.s生成，平移，編輯加強筋Copyright 2013 Altair Engineering, Inc. Proprietary and.s生成，平移，編輯加強筋移動加強筋編輯加強筋厚度Copyright 2013 Altair Engineering, Inc. Proprie

12、tary and.s刪除小面/小倒角在網(wǎng)格中輕松刪除小碎面一鍵刪除平面中的所有小面Copyright 2013 Altair Engineering, Inc. Proprietary and.s創(chuàng)建裝配面網(wǎng)格在網(wǎng)格基礎上創(chuàng)建裝配面在網(wǎng)格參數(shù)中定義裝配面Copyright 2013 Altair Engineering, Inc. Proprietary and.s裝配類型網(wǎng)格裝配Mesh Assembly (Node Sharing, Duplicate Nodes)Finite Sliding, Small Sliding, Tiedtact, Tie接觸nection, Press-fi

13、t tact etc.,RBE Bolt, Solid Bolt（Hexa Bolt, Tetra Bolt）螺栓連接Spring, Gap, Jo, MPC, Glue etc其他連接SimLab 可以通過以下方式進行裝配：1.2.3.幾何ID面或者邊的顏色分組的名稱Copyright 2013 Altair Engineering, Inc. Proprietary and.s支持裝配的文件格式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來創(chuàng)建裝配模型。支持不同求解器之間的轉換。 (如：導入ABAQUS文件，

14、導出為 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座圈墊接觸面創(chuàng)建Copyright 2013 Altair Engineering, Inc. Proprietary and.sRBE螺栓連接通過利用特征來節(jié)省時間鏍釘帽類型自動RBE螺栓創(chuàng)建: 僅需選擇軸承面的邊線多種螺栓類型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創(chuàng)建參數(shù)化的實體螺栓4種類型螺栓最多11個參數(shù)軸承表面網(wǎng)格可用于定義螺栓Copyright 2013 Altair Engineering, Inc. P

17、roprietary and.s創(chuàng)建螺栓/軸承通過選擇軸承面自動創(chuàng)建螺栓時間:10個螺栓僅用1分鐘(六面體或四面體)通過定義中心軸和位置，創(chuàng)建各種軸承Copyright 2013 Altair Engineering, Inc. Proprietary and.s自動接觸設定基于以下方式:通過導入模板自動創(chuàng)建接觸參數(shù)支持的接觸類型: 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可設定的接觸參數(shù)如果勾選“AutomaticallyIdentifytacts”, 將基于所定義的參數(shù)在整個模型中自動探測并創(chuàng)建接觸對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：復雜裝配體的接觸定義MSummary:Parts: 54Nodes: 2,100,000Elems: 1,200,000Define Press-fit bet block and bearing sn liner and cylinder block,