正态-极值Ⅰ型可靠度的Bayes方法

Bayesian Hethod on Structural Reliability of Normal-Extreme Model I

在强度一应力模型中,设强度服从正态分布.应力服从极值Ⅰ型分布,其中应力已知,强度未知。本文应用 Bayes 方法,就强度参数的无信息验前分布得到了结构可靠度 P,的置信下限和正态一正态模型可靠度的置信下限.最后给出了实例计算。

In strength—stress model,let strength be observed to mormal distribution and let stress be observed to extreme I model distribution,where stress is known and strength unknown.By applying Bayesjan method,the fiducial lower limit of structural reliability pr and the fiducial lower limit of nor- mal—normal extreme model reliability are obtained with respect to the information—free a priori distri- bution of strength parameter.The calculation of example is given finally.