1. Research Institute of Highway, Ministry of Transport, Beijing 100088, China;
2. School of Transportation Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
3. School of Engineering, China Agriculture University, Beijing 100083, China
Analysis of Time-dependent Reliability and Sensitivity of Vehicle Components
ZHANG Lu1,2, WANG Yun-peng2, REN Chun-xiao1, LIU Ting-jie3
1. Research Institute of Highway, Ministry of Transport, Beijing 100088, China;
2. School of Transportation Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
3. School of Engineering, China Agriculture University, Beijing 100083, China
摘要In this study, a 1D Brownian movement formula that considers the uncertainty of initial parameters was derived and a time-dependent model of load and structural parameters established. A model for reliability and its corresponding sensitivity analysis was proposed as well according to the residual strength distribution calculated based on the S-N characteristics of the material and on stress-strength interference theory. This model considers the effects of interaction under uncertain structural parameters and strength as well as the uncertainty of actual use. On this basis, the variation rules of initial parameters, strength, load, reliability, and its sensitivity with time are analyzed; those of reliability, failure rate, and reliability sensitivity with time were calculated when the driving axle of a vehicle was taken as an example.
Abstract：In this study, a 1D Brownian movement formula that considers the uncertainty of initial parameters was derived and a time-dependent model of load and structural parameters established. A model for reliability and its corresponding sensitivity analysis was proposed as well according to the residual strength distribution calculated based on the S-N characteristics of the material and on stress-strength interference theory. This model considers the effects of interaction under uncertain structural parameters and strength as well as the uncertainty of actual use. On this basis, the variation rules of initial parameters, strength, load, reliability, and its sensitivity with time are analyzed; those of reliability, failure rate, and reliability sensitivity with time were calculated when the driving axle of a vehicle was taken as an example.
张禄, 王云鹏, 任春晓, 刘婷洁. 机械零部件时变可靠性及其灵敏度分析[J]. Journal of Highway and Transportation Research and Development, 2016, 10(1): 104-110.
ZHANG Lu, WANG Yun-peng, REN Chun-xiao, LIU Ting-jie. Analysis of Time-dependent Reliability and Sensitivity of Vehicle Components. Journal of Highway and Transportation Research and Development, 2016, 10(1): 104-110.
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2016, Vol. 10 
