Equivalent Fatigue Stress Analysis of the Key Parts of Railway RD2 Axle
Nonlinear dynamics model of the C62 freight car was established firstly and the random load spectrum acted on the wheelset was obtained by the simulation of the freight car running on a typical line.Taking the cyclic constructive relation of LZ50 axle steel into account in the finite element analysis of the wheelset,the stress time histories of the key parts of the axle in some typical conditions were got.Furthermore,based on the stress spectrum analysis of the hazard sections of the axle,the probabilistie fatigue stress spectrums with given probability and confidence were obtained.Finally,combining with the linear cumulative damage rules,the stress distribution of RD2 axle was investigated,which is fundamental for the further prediction of the fatigue life of axle.
axle finite element method random load fatigue reliability
Liang Hongqin Zhao Yongxiang Wu Pingbo
School of Mechanical Engineering Southwest Jiaotong University Chengdu,China State Key Laboratory of Traction Power Southwest Jiaotong University Chengdu,China
国际会议
太原
英文
666-671
2012-01-13（万方平台首次上网日期，不代表论文的发表时间）