PTCCreo仿真功能Creo_Simulate_

1、iPTC5 LiveTech ForumCreo Simulate高阶单元分析软件典范陈利民Senior AEiPTC LiveTech Forum目录|creo Simulate 功能简介jCreo Simulate 原理 P-Method1 Creo Simulate有效性证明典型用户案例Creo Simulate应用场景定位【总结Creo Simulate功能简介Creo结构和热分析功能功能类型- Structure结构受力分析- Vibration结构动响应分析-Thermal热分析-Fatigue疲劳寿命预测主要分析功能-结构静强度变形分析-结构大变形分析、接触分析-模态分析-有预载

2、荷的模态分析-时域、频域动响应分析-随机振动分析-屈曲分析-稳态及瞬态热分析-疲劳寿命分析化交滋w-灵敏度、设计优化2014 PTC5PTC LiveTech ForumP-Method 方法有限元法入门 FEA是Finite Element Analysis 的缩写，它是Finite Element Method (FEM)的一部分，帮助工 程师进行手工无法完成的复杂仿真分析工作FEA将模型离散化为1D,2D或3D的微小形状，并基于边界条件求解它们的位移所有的FEA仿真分析都采用数值逼近的方法结果的精确性依赖于正确的模型和数值收敛效果7PTC LiveTech ForumCreo Simul

3、ate有限元理论P-MethodFEA专业人员的典型问题网格这么稀疏，为什么结果会准确?ANSYS有超过100种的单元类型，Creo Simulate却不超过20种，Simulate能彳亍吗?9PTC LiveTech Forum有限元法基本概念：形函数(Shape function)#PTC LiveTech Forum#PTC LiveTech Forum已知单元节点Nodq和Node的位移,T:位移X-X定义s%冲忤数S=f(x)#PTC LiveTech Forum#PTC LiveTech Forum悬臂梁静强度分析2. 720552.448492.01320I.57792I.I42

4、630.707340.272050.00000住移 Mag WCS(rnm)巳变憩妖大位移 2.7205匚400比制 7.3515E+00MS：: LoadSei I : PIPE#PTC LiveTech Forum#PTC LiveTech Forum11PTC LiveTech Forum通常的有限元分析方法(H-Method)Model 1,严重误差Model 2,依然是严重误差Model 3,开始有些效果Model 4,可以接受的分析#PTC LiveTech Forum#PTC LiveTech Forum梁尺寸10nx 1nx 1n弹性模量:30,000,000 psi 荷150

5、 lb. at tip梁理论最大位移：0.2n 梁理论最大应力：90,000 psi #PTC LiveTech ForumCreo Simulate有限元分析理论：P-Method方法薄板零件P-Method与H-Method方法对比13PTC LiveTech ForumCreo Simulate有限元分析理论：P-Method方法#PTC LiveTech ForumCreo Simulate有限元分析理论：P-Method方法Creo Simulate 的P-method般有限元分析软件的H-method#PTC LiveTech ForumCreo Simulate有限元分析理论：P

6、-Method方法Creo Simulate只用4个单元使用几何单元（单元精确吻合几何）解算精度不是通过增加单元数，而是自 动调整单元的多边形阶次（P-method）ANSYS/NASTRAN要用数十至数百个单元 不使用几何单元（单元为直边） 解算精度通过增加单元数#PTC LiveTech ForumCreo Simulate有限元分析理论：P-Method方法#PTC LiveTech ForumCreo Simulate有限元分析理论：P-Method方法uKIBaBH嚣B8誰#Creo Simulate P-Method1 st PASSPolynomial order 1 (Y=AX

7、+B)PTC LiveTech Forum#PTC LiveTech ForumCreo Simulate P-MethodPolynomial order 2 (Y=AX2+BX+C)11PTC LiveTech ForumCreo Simulate P-Method2nd PASSPolynomial order 2 (Y=AX2+BX+C)#PTC LiveTech ForumCreo Simulate P-MethodPolynomial order 3 (Y=AX3+BX2+CX+D)#PTC LiveTech ForumCreo Simulate P-Method3rd PASSP

8、olynomial order 3 (Y=AX3+BX2+CX+D)#PTC LiveTech ForumCreo Simulate P-MethodPolynomial order 4 (Y=AX4+BX3+CX2+DX+E)13PTC LiveTech ForumCreo Simulate P-Method4th PASSPolynomial order 4 (Y=AX4+BX3+CX2+DX+E)#PTC LiveTech ForumCreo Simulate P-Method5th PASSPolynomial order 5 (Y=AX5+BX4+CX3+.+F)#PTC LiveT

9、ech ForumCreo Simulate P-MethodPolynomial order 5 (Y=AX5+BX4+CX3+.+F)15PTC LiveTech ForumCreo Simulate P-Method6th PASSPolynomial order 5 (Y=AX5+BX4+CX3+.+F)#PTC LiveTech ForumCreo Simulate P-MethodPolynomial order 5 (Y=AX5+BX4+CX3+.+F)#PTC LiveTech ForumCreo Simulate P-Method7th PASSPolynomial orde

10、r 5 (Y=AX5+BX4+CX3+.+F)#PTC LiveTech ForumCreo Simulate P-MethodPolynomial order 5 (Y=AX5+BX4+CX3+.+F)17PTC LiveTech ForumCreo Simulate P-Method8th PASSPolynomial order 5 (Y=AX5+BX4+CX3+.+F)#PTC LiveTech ForumCreo Simulate P-MethodPolynomial order 5 (Y=AX5+BX4+CX3+.+F)#PTC LiveTech ForumCreo Simulat

11、e P-Method9th PASSPolynomial order 5 (Y=AX5+BX4+CX3+.+F)#PTC LiveTech ForumCreo Simulate与一般有限元分析方法的比较般有限元方法3140012001000QCreo Simulate1600Hl 04-deflection error conventional FEM % -stresserror conventional FEM % -DOF conventional FEM deflection error Mechanics (%O stress error Mechanica %ModellNoO D

12、OF Mechanica219PTC LiveTech ForumCreo Simulate （以前称Mechanica）有效性证明#PTC LiveTech Forum等强度梁的例子吉林大学机械学院工程力学结构分析室研究员张洪涛Pro/Engineer野火版40 / B.0注:此书非PTC公司赞助岀版序号方案说明1试验研究试验是一个非常有效的手段，通过试验可以增加我们对分析结 果的信心和分析精度的认识2解析法计算对这个简单问题，解析法很容易就可以得到理论解3Mechanica 分析利用Mechanica环境进行建模、分析，得到关心区域的应变值PTC LiveTech Forum等强度梁的例子

13、23PTC LiveTech Forum等强度梁的例子试验法应变片位置WiiHlDoBw D3#PTC LiveTech Forum等强度梁的例子Mechanica 分析：3D CAD/CAE模型25PTC LiveTech Forum等强度梁的例子#PTC LiveTech Forum等强度梁的例子加载位置点DO DI D2 D3 D423y：0 门34643上下表面约束TZ4个孔约束TXY测量面域的XX应力值 令 Measure_StressXX_MAX $ Measure_StressXX_MIN#PTC LiveTech Forum等强度梁的例子 C：Mechanica分析：分析结果召

14、去码重量：505g召去码个数：1加载位置：DO最远端强度结果：均值14.4MPa27PTC LiveTech Forum等强度梁的例子解析法应力值14.46 MPacr = 6其中:bx 碍度h为厚度x为断面方向坐标变量F为载荷,即袪码的重屋已矩;=0.15血= 3.7 mmx 300F = 0.505-9.8 = 4.949 AT#PTC LiveTech Forum等强度梁的例子#PTC LiveTech Forum等强度梁的例子所以,ms位置施加一个磁码时.最大应力值为山曲肌#PTC LiveTech Forum等强度梁的例子#PTC LiveTech Forum等强度梁的例子14,46

15、 MPa存门 口厅 16-4.940(7 = 0 2* = 0 =bx.h2 bx 用 0.153.7229PTC LiveTech Forum等强度梁的结果对比试验、解析法、Mechanica应力值对比加载加载位 置点磁码数量试验数据计算后得到 的应力值/Mpa解析法计算的应力 值/MpaMechanica计算的 应力值/Mpa1DO114.9114.4614.362DO229.6128.9228.733DO344.5243.3843.09应力值相对偏差比较试验与解析法的应力值的相 对偏差（）Mechanica与解析法的应力值的相对 偏差（）#接触问题分析接触问题分析接触问题分析B的上表面接

16、触问题分析接触问题分析F=1OOOON接触问题分析接触问题分析接触问题分析：MECHANICA结果:、Displocemenl Moq (WCS) (mm)DeiormedMox Disp 3.I92IE-OIScale l.OOOOEOOLoodsel；LoadSeil : PRTODO83.lS2etSl2.B73e+0L2.554e+012.234e+0i1.915e+0L1596e+011.27?e+019 5?6e+006.384e+003.192e+00最大位移31. 9mmPTC LiveTech ForumStress von Mises (WCS) (N / rnrnA2)D

17、&formedScale LOOOOE+OOe.4is&*e2.173e+021.932e+0Z1 690e+021 1496+02 1207r+0? ：5Be+0t829e+0Lg 4i5e+0iLoadsei：LoadSell : PRT000829PTC LiveTech Forum接触问题分析#PTC LiveTech Forum接触问题分析接触问题分析：ANSYS结果M B 1 Static StrnctrU (AISTS) - lechkysics/LS-BTIXPile Idit 和 Units Tools HelpResult 10 (ima Sca】QH Model (B4)

18、S&wmeU#(jl03rdnotc 泪errs白 Ccnrertirtf“浪 Ftklbrte 5did TOPRT0CO3 E) MGSh:Faze Sung (=- vZJ SUtk Structural (B5) ordrsb 5ettn35 电，Fixed 5M3Wrt FMedsuDcorta 魚F*eEH/ Solution (B6)Soljtion Jr/ooation lotd Deformstm EaUyeat SUessB: Static Strvictar al GUETS)E-njvAl ent Stresslyp* E quiwd&nt (voa-fli St”Vn

19、it V%line 12010-7-3 16 19244 .02 I az216.9189.79162.68J 35.563C6.4G81 33954 2E627 1135.1412e-5 BiYATTiiA Ysii 次0 CO50D.0DiGcTO-ctry/Ji 1 入Pfitrt Previu*入Report Preview/TextOTi* cr “ore bodies e&v be erec*n?trained wtd eeefjCTiCint r Otm ot note uontd：匕 fegions eyr not be ir： iMt;心 contact CI a(io. i

20、r.so-iBI10.54* 9CH0(10.90*. 45*JC10. WT.OO-)MacNeal, R.H., and HarderR.L. nA Proposed Standard Set of Problems to Test Finite Element Accuracy.11 Finite Elements in Analysis and Design I.Elsevier Science Publishers, 1985.通过对称性建根开 放半球的四分之并以go。为 间馬在大园上依次 祈加点载荷。誉拱 任SJDSi点处的径 向位移。35PTC LiveTech Forum分析结

21、果准确性木父验指南#PTC LiveTech Forum分析结果准确性木父验指南静态分析校验的例子（续）:3D半球壳元素类型壳(4)单位！IPS尺寸：（使用四分之一模型）半径：10菰跨虧90輾 0.04材料厨性，质0 每单位质量成本；0 畅氏模量，6825e7泊松比，0.3热膨张0 传导率，0约束位直自由度位于曲线A-C上： 位干曲线G-E. 位干点D上在TransP. RotR和RotT中固定 在TransP. RotR和RotT中固定 在TransT中固定载命位 2/：分布空间变化位干点C上FR = 1位干E上：FR = 1N/AN/AN/AN/A结果数据比较Mecha nica理论结构差

22、异百分比载荷处的径向位移（m=disp rad）0.09240.09330.97%L丿收做性%：对于局部位移和应变能为0.6%最大P： 9方程数：Q6537PTC LiveTech ForumCreo Simulate有效,性证明小结经过著名的MacNealHade有限元问题集的验证一A Proposed Standard Set of Problems to Test Finite Element Accuracy 参考 MacNeal R.H., and Harder, R.L. A Proposed Standard Set of Problems to Test Finrte Elem

23、ent Accuracy. Finite Elements in Analysis and Design I. Elsevier Science Publishers, 1985.其他CAE软件也经过该问题集的验证- NASTRAN- ANSYS一 ALGOR Creo Simulate的结果与使用传统分析软件（如ANSYS、NASTRAN和 NAFEMS）获得的结果几乎一致，或与理论分析结果几乎一致。#PTC LiveTech Forum典型用户案例PTC LiveTech Forum成功案例和用户列表被广泛的客户使用和验证-国外超过8,000家工业企业在产品研发中使用PTC仿真产品:Sch

24、neiderElectricAlcatel-LucentWe make it visible.EMERSON Motor TechnologiesAIRBUSBOSCHRexrothBosch GroupQUALITY FOR LIFE囿 VaillantOU15CHLANC GmoMZF Lnksystemew winklerdOnnebier J丿2014 PTC#PTC Global Services Enhances Dynamic Behavior at Zeiss Optical SystemsCarl Zeiss Optronics GmbH, located in Oberko

25、chen, Germany, is a member of the Carl Zeiss group, a worldwide leading manufacturer of optical systems. Carl Zeiss Optronics is focused on high-precision and robust optoelectronic systems for observation and defense purposes.We make it visible.BUSINESS INITIATIVECarl Zeiss Optro nics in eludes stru

26、ctural analysis and dynamic optimization very early in the product development process to assure that the optical systems fulfill the high standards regarding optical precision within a rough environment. To meet the very tough development schedule, PTC Global Services was charged with the dynamic s

27、ystem analysis of the complete periscope of the new German Puma tankSOLUTIONPTC Global Services Con suiting built up the dyn amic system model of the periscope in Pro/MECHANICA directly on the given Carl Zeiss Pro/ENGINEER assembly data. Shock and random response calculations were performed with thi

28、s model andstructural modifications proposed, elaborated on with the designers, and analyzedRESULTLocated weak points in the initial design and implemented enhancements that significantly improved shock strength and image quality under vibration loads2006 PTCReduced system mass by approximately 18%A

29、ssured that the first prototype successfully passed the dynamic tests“The simulation service was delivered in high quality within the promised schedule. We appreciate the reliability of the performed work and the delivered simulation models as well as the ongoing excellent cooperation with our desig

30、n team.55Dirk Weisser, Head of Design Department, Carl Zeiss Optronics GmbHPTC Global Services Consulting Optimizes Space Station Parts for AstriumAstrium, a subsidiary of EADS located in Bremen, Germany, is a space company focusing onintern at io nal space programs. Astrium has developed many syste

31、ms includi ng the Spacelab for the U.S. Shuttle, Ariane rocket stages and the Columbus Orbital FacilityBUSINESS INITIATIVE十Astrium needed a structural analysis and optimization of a leaf spring to be used for the International Space Station (ISS)EADS _ _a s tz r- i lj mSOLUTIONPTC Global Services Co

32、nsulting modeled and analyzed the component in Pro/ENGINEER and Pro/MECHANICA Structure and provided a detailed presentation and solution proposal to AstriumRESULTPrecisely located the overloaded areas in the initial designFound and optimized the structure that will fulfill the requirementsProvided

33、an optimized STEP model directly for the Astrium design process“The excellent simulation and engineering knowledge provided by PTC Global Services has given us a sound solution for a critical partand within an incredibly short time frame.55Dr. Ingo Retat, System Engineer, Astrium2006 PTC2006 PTC2006

34、 PTCAutomation and DrivesDynamic response of engine housing coming from rotating electromagnetic field, calculated wth ProMECHANICAPTC Global Services Supports Siemens9 Engineers in FEM SimulationSiemens AG Automation and Drives (A&D) offers a complete and integrated line of products, systems and so

35、lutions for production and process automation. Its development department for electrical standard drives (SD) and production facilities are located in Bad Neustadt a. d. Saale, Germany, as well as in various locations worldwideBUSINESS INITIATIVEIn the context of a PTC Precision Learning Program, Si

36、emens A&D SD requested Pro/MECHANICA Structure training with respect to its special demands in FEM analysis of electrical motors during the design processSOLUTIONPTC Global Services Con suiting customized a special training and workshop in close collaboration with Siemens A&D SD. The training conten

37、t was prepared in meetings at the customers facilities and delivered on site in the English Ianguage for Siemens engineers from different European countriesRESULTPro/M ECHANICA skills improved between 50-100%Optimized engine desig ns and reduced developme nt cycle time expected from more FEM analysi

38、s usage during the design process“The customized Pro/MECHANICA structural simulation training provided by PTC Global Services was performed very professionally with high technical as well as educational skills and was very flexible with respect to our needs. We were furthermore impressed with the so

39、ftware features for fastener and dynamic analysis and consequently will use Pro/MECHANICA Structure more withinOUr design process/5Marion Schreck, Research and Development Motors, Siemens A&D Standard Drives2006 PTCDrive and Control lech no logiesPTC University Educates Bosch Rexroth Engineers in Ad

40、vanced Nonlinear Contact and Bolt Simulation with the Pro/MECHANICA FEM CodeBosch Rexroth AG, headquartered in Lohr am Main, Germany, is a developer, producer and supplier of drive and control technologies for hydraulic, electric, pn eumatic or mecha nical applicati ons. In order to in crease produc

41、t quality in spite of reduced development time, the PTC University was charged with the further education in advanced contact and bolt analysis with Pro/MECHANICA.RexrothBosch GroupSOLUTIONPTC offered simulation workshops providing basic principles of bolt analysis. necessary software knowledge, typ

42、ical application tasks and furthermore solutions for special customer examples.RESULTAcquired knowledge about the con tact theory used in Pro/MECHANICA a nd methods to assure nu meric solutio n qualityAcquired solution roadmaps for typical bolt analysis tasksCritical bolted desig ns can now be an alyzed and optimized in Pro/MECHANICA before prototypes are being