Probabilistic Modeling of Damage Accumulation for Fatigue Reliability Analysis
Combining a nonlinear damage accumulation model,a probabilistic S-N curve and one-to-one probability density functions transformation technique,a general probabilistic methodology for modeling damage accumulation is developed to analyze the fatigue reliability in this paper.The damage accumulation is characterized as a distribution in a general degradation path,which captures a nonlinear damage accumulation phenomenon under multi-level loading conditions,its mean and variability change with time.Experimental data of 45 and LZ50 steels used in the railway vehicle are then used to validate the proposed methodology.The fatigue reliability is analyzed and demonstrated using probabilistic model of cumulative fatigue damage.
fatigue probabilistic damageaccumulation reliability
Shun-Peng Zhu Hong-Zhong Huang Qiang Liao Rong Yuan Li-Ping He
School of Mechatronics Engineering University of Electronic Science and Technology of China Chengdu, Sichuan, 611731, P.R. China
国际会议
成都
英文
917-922
2012-06-15（万方平台首次上网日期，不代表论文的发表时间）