Thermal fatigue Random variable Probabilistic analysis Solder joint Lognormal distribution;
热疲劳； 随机变量； 概率分析； 焊点； 对数正态分布；
In downscaling a probabilistic spatially or temporal ly explicit disaggregation of a heterogeneous variable can be constructed using a scalar.
尺度下推时，利用标量可以构建异构变量时空明确的统计解集。
First, the performance function is analyzed by the non-probabilistic set-based reliability model, and then the reliability of all regions in the normalized interval variable space is summed up.
该模型首先通过将功能函数进行非概率可靠性分析，然后将标准化区间变量空间所有区域的可靠度进行求和计算，从而给出结构的可靠度。
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