4191基于ANSYS的承压齿盘结构优化设计研究

编号潍坊学院毕业论文课题名称:基于ANSYS的承压齿盘结构优化设计研究学生姓名:傅星富学号:08011140255专业:机械设计制造及其自动化班级:2008级本二指导教师:林近山2012年6月潍文坊学院本科毕业论b目录中文摘要.....................................................................................................................................I英文摘要...................................................................................................................................II第一章.前言.............................................................................................................................11.1有限元法的提出和应用...............................................................................................11.2有限元技术的发展历史及现状...................................................................................21.2.1结构分析中的有限元法.....................................................................................21.2.2有限元法在工程结构分析中的应用................................................................31.2.3有限元法和软件发展特征................................................................................31.3本课题的研究内容和意义..........................................................................................4第二章.ANSYS优化技术在零件结构设计中的应用............................................................52.1引言...............................................................................................................................52.2ANSYS软件简介.........................................................................................................52.3ANSYS的优化方法及收敛准则.................................................................................52.4.有限元分析的后置处理...............................................................................................6第三章.基于ANSYS的承压齿盘结构优化设计..................................................................73.1优化设计的基本原理...................................................................................................73.2ANSYS优化设计的方法和步骤.................................................................................83.2.1优化方法.............................................................................................................83.2.2ANSYS优化过程的步骤...................................................................................83.3基于ANSYS的承压齿盘结构优化设计.................................................................103.3.1基本参数..........................................................................................................103.3.2约束条件..........................................................................................................113.3.3建立优化函数..................................................................................................123.3.4结果与讨论......................................................................................................123.4结论............................................................................................................................15第四章.结束语.......................................................................................................................16参考文献..................................................................................................................................17附录..........................................................................................................................................18致谢..........................................................................................................................................27潍文坊学院本科毕业论I摘要优化设计一直是工程界较为关注的领域。它以数学中的最优化理论为基础，以计算机为手段，根据设计所追求的性能目标，建立目标函数。在满足给定的各种约束条件下，寻求最优的设计方案。优化设计在生产实践中被广泛的应用。如何找到一组最合适的设计变量，在允许的范围内，能使所设计的产品结构最合理、性能最好、质量最高、成本最低（即技术经济指标最佳），有市场竞争能力，同时设计的时间又不要太长，这就是优化设计所要解决的问题。本文用承压齿盘的实例介绍了结构优化设计在ANSYS上实现的基本原理及主要步骤。结果表明,合理的结构设计可以提高安全性和经济性,并为工程上的机械零部件的优化设计提供了依据。通过利用有限元优化分析功能对承压齿盘的结构进行优化分析,证明用优化分析功能实现结构优化分析的可行性,从而为其它复杂结构的优化分析提供了新的方法和依据。关键词：优化设计ANSYS齿盘目标函数潍文坊学院本科毕业论IIABSTRACTOptimizationdesignhasbeenthefieldcomparativelypaidcloseattentiontointheprovinceofengineeringallthetime.Itisbasedonthemostmathematicaltheoryoftheoptimization。Bymeansofthecomputer,accordingtotheperformanceofthepursuitofdesigngoals,itestablishestheobjectivefunction.Tomeetavarietyofconstraintsunderwhichitwillseektheoptimaldesign.Optimaldesignhasbeenthepracticeintheproductionofawiderangeofapplications.Howcanwefindagroupofthemostappropriatedesignvariables,intheallowedrangeofproductsdesignedtomakethemostreasonablestructure,thebestperformance,highestquality,lowestcost(thatis,thebesttechno-economicindicators),thereisamarketcompetitivenessandatthesametimedesignandnotaverylongtime.Thisistheoptimizationofthedesignproblemtobesolved.Inthispaper,examplesofthegearpressureplatestructureintroducedinANSYStooptimizethedesigntoachievethebasicprinciplesandmajorsteps.Theresultindicatesthattherationaloptimizationdesigncanimprovethesecurityandeconomy,andinformationisprovidedforimprovingdesignofallkindsofmachineryparts.WithANSYSfiniteelementoptimizedanalysisfunction,thestructureofpressureddentatedischasbeenoptimized,whichprovesthefeasibilitybymeansofANSYSoptimizedanalysis.Thussupplynewmet