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《China Mechanical Engineering》 2016-01
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Prediction of Fretting Fatigue Life Based on Energy Density Method

Ping Xuecheng;Zhao Liaoxiang;Wu Weixing;East China Jiaotong University;Tianjin University of Science & Technology;  
Strain energy based damage parameters were calculated from the stress and strain fields on contact interface.Material parameters in the damage parameter-life curve were obtained from fretting fatigue experiments.Finally,the fretting fatigue life prediction model of LZ50 steel was established.Compared with the surface wave transmission(SWT)model,it is found that the Chen damage parameter is selected as fatigue life predication.The influences of friction coefficient,rounded corner,pressure and cyclic tension loads on Chen damage parameters of LZ50 axle steel were studied,and the crack initiation position and fretting fatigue life of a CRH2 type hollow axle was also investigated.
【Fund】: 国家自然科学基金资助项目(51365013);; 江西省自然科学基金资助项目(20133ACB21002);; “井冈之星”青年科学家培养计划资助项目(20112BCB23013)
【CateGory Index】: U269
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