ESTABLISHMENT OF VEHICLE FRONT AXLE LOAD SPECTRUM AND ITS APPLICATION OF FATIGUE LIFE ESTIMATION
The front axle is very important to safety and reliability of the vehicle. To estimate the fatigue life of the vehicle front axle, a simple and quick method is adopted. The vehicle front axle load spectrum was measured when the vehicle ran on general tar-paved roads, mountainous roads, stones roads, etc. The table of the frequency relationship of the different mean and amplitude load was obtained by using rain-flow counting method of three peaks and valleys. Through a series of tests and calculation, the mathematical model of P-S-N curve of vehicle front axle under the different probabilities was acquired, and the fatigue life of the different mean and amplitude load was obtained. According to the obtained frequency relationship and the fatigue life of the different mean and amplitude load, and with Miner linear accumulated fatigue damage rule, the service life of vehicle front axle under stochastic load was estimated. This method simplifies the calculation of the fatigue life estimation, and these estimated results will be significant for the fatigue design, test, life estimation and the parameters optimizing of the vehicle front axle.
Hongwei Wang Hongyun Luo Qunpeng Zhong Lifeng Li
School of Material Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083,Peoples Republic of China
国际会议
第九届工程结构完整性国际会议(The Ninth International Conference on Engineering Structural Integrity Assessment)
北京
英文
2007-10-15（万方平台首次上网日期，不代表论文的发表时间）