汽车排气系统的CAE分析与优化设计
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摘要
给出汽车排气系统对车身振动、车辆噪声等性能的影响因子,建立某柴油汽车排气系统的三维模型,并利用该模型用CAE软件对该汽车排气系统设计过程中出现的断裂情况进行模拟,利用有限元法对排气系统结构进行分析,找出事故原因,并对关键结构进行优化,最后通过实车耐久试验对优化方案进行了验证。该方法为汽车排气系统设计过程中CAE工具的应用提供了参考。
Automotive exhaust system has an important impact on body vibration,vehicle noise and so on,and CAE has a unique advantage in the design of automitive exhaust system. In this case,a diesel car exhaust system fractured,the finite element method was used to study the structure of the exhaust system; the cause of the accident was identified,and the key structure was optimized; finally by real vehicle durability test,the solution was verified which can solve the problem of exhaust pipe fracture. The solution provides a reference for the use of CAE in the design of automotive exhaust system.
Automotive exhaust system has an important impact on body vibration,vehicle noise and so on,and CAE has a unique advantage in the design of automitive exhaust system. In this case,a diesel car exhaust system fractured,the finite element method was used to study the structure of the exhaust system; the cause of the accident was identified,and the key structure was optimized; finally by real vehicle durability test,the solution was verified which can solve the problem of exhaust pipe fracture. The solution provides a reference for the use of CAE in the design of automotive exhaust system.
引文
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[2]杨树凯,朱启昕,吴仕赋.基于有限元技术的汽车支架拓扑优化设计研究[J].汽车技术,2006(3):16-18.YANG Shukai,ZHU Qixi,WU Shifu.Study on FEM-Based Topological Optimization Design of Brackets[J].Automobile Technology,2006(3):16-18.
[3]杜宏云,施红星.计算机辅助工程CAE在汽车开发中的应用与展望[J].交通标准化,2004(4):39-41.DU Hongyun,SHI Hongxing.Apply and Forecast Computer Aided Engineer(CAE)in Developing of Vehicle[J].Communications Standardization,2004(4):39-41.
[4]郭迎春.汽车行业CAE技术应用与研究[J].重型汽车,1998(5).
[5]柴山,王健,王凤生.结构强度分析结构优化设计方法在汽车设计中的应用[J].山东工程学院学报,1999(1):1-5.
[6]王有智.CAE技术的过去、现在和未来[J].计算机辅助设计与制造,1998(12).
[7]任军峰.机械CAE的发展及应用[J].山西交通科技,2002(1).