Synthesized Analysis Method of Structural Durability and Damage Tolerance Based on Reliability

摘要：

Based on the theory of reliability and the aircraft structural durability and damage tolerance, the synthesized analysis method of the durability and damage tolerance is proposed by studying the total process of crack initiation and crack growth. In the paper, the non-probability initial crack size in the damage tolerance design handbook is regarded as the threshold size, and the probability of the crack size exceeding the threshold size can be given by detection statistics data, and the probability distribution of crack size corresponding to given exceedence probability can be deduced, and this probability distribution is regarded as the probability distribution of initial crack size at probability damage tolerance analysis. The explicit expression of structural safety margin is also derived at the damage tolerance analysis in order to avoid the calculation of multiple integrals, which improves the calculation efficiency and easily uses the traditional reliability analysis methods to solve reliability such as first order second moment method and Monte-Claro. The numerical examples and comparative analysis with existing methods show that the method is of reasonable and efficient.

关键词： reliability durability damage tolerance aircraft structure synthesized analysis

作者: ZHAO Weitao ZHANG Xu

作者单位: College of Aerospace Engineering, Shenyang Aerospace University, Shenyang 110136, Liaoning, China

会议类型: 国际会议

会议名称: The 2010 International Symposium on Safety Science and Technology(2010 安全科学与技术国际会议)

会议地点: 杭州

会议语种:英文

页码: 1813-1819

在线出版日期: 2010-10-26（万方平台首次上网日期，不代表论文的发表时间）