Study on the Mechanical Fatigue Life Estimated of Pistons

摘要：

With the enhancement of the power of engines,pistons are easy to bring crack caused bythe alternative mechanical loads.In this paper an estimated formula of the fatigue life is developedby amending the Paris formula on the basis of the study of the fatigue behavior of pistons.It consistsof the horny crack life and the surface crack life.As an example,parameters in the formula for onetype of piston are determined.The expression of the shape geometry factor and the stress range valueare obtained by carrying out the FEA static and dynamic analysis,respectively.The crack parametersare analyzed based on the fatigue theory.The fatigue life of the piston is calculated using theseparameters.Finally,the validity of the estimated formula is verified by the experiments.

关键词： Piston 3-D finite element analysis stress intensity factor (SIF) fatigue life-span

作者: Y.X.Wang H.Y.Shi Y.Q.Liu

作者单位: School of Traffic and Vehicle Engineering,Shandong University of Technology,Zibo 255049,Shandong,China

会议类型: 国际会议

会议名称: 2008 International Conference on Advances in Product Development and Reliability(2008年产品开发与可靠性进展国际会议)

会议地点: 成都

会议语种:英文

在线出版日期: 2008-08-04（万方平台首次上网日期，不代表论文的发表时间）