文章将包络函数引入时空动态可靠性问题,通过包络面来近似随时间和空间位置变化的多参数动态可靠性问题的失效域,从而将时空动态可靠性问题转化成相应的静态问题,在保证计算精度的条件下极大地降低了可靠性与可靠性全局灵敏度分析的计算量.对于时空动态可靠性全局灵敏度分析问题,文章将包络面与三点估计相结合,高效完成了输入变量的可靠性全局灵敏度分析.%In this paper, we employ the envelope functions in temporal and spatial reliability problems, by approxi?mating the failure domain of the temporal and spatial multi?parameter reliability through the envelope hyper?planes, the temporal and spatial reliability can be converted into time?independent ones, thus the computational cost can be greatly reduced under guaranteeing the calculation precision. Combining the envelope hyper?plane with three?point estimation, the global sensitivity of the reliability with respect to the input variables can be analyzed efficiently.
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