Lifetime Prediction of Thermo—mechanical Fatigue for Exhaust Manifold

摘要：

ln this research,the non-linear thermo．mcchanical simulation，experimental study and Iifetime prediction of engine exhaust manifold were systematically analyzed．Fluidstructure coupled method was employed in the simulation． Heat transfer analysis simultaneous considered radiation． convection and conduction．Inelastic properties of the materials used for the thermo-mechanical analysis inclnded kinematic hardening and creep．Some models were introduced and used to predict lifetime of the manifold．Temperature data obtained during the engine bench tests can be accurately matched with the analysis results．The results indicated that the highest temperature located OH the confluence of exhaust manifold and the plastic dissipated energy field caused by the cyclic thermal loading can be matched with the crack zone of exhaust manifold．

关键词： Fluid-Structure Coupled Method Radiation Thermal Mechanical Analysis Lifetime Prediction

作者: Chang Liu Weizheng Zhang

作者单位: Mechanical Engineering Beijing Institute of Technology Beijing,China

会议类型: 国际会议

会议名称: 2011 International Conference on Manufacturing and Industrial Engineering(ICMIE 2011)(2011年制造及工业工程国际会议)

会议地点: 海口

会议语种:英文

页码: 24-30

在线出版日期: 2011-02-22（万方平台首次上网日期，不代表论文的发表时间）