提出了计算失效率的快速收敛的迭代算法，并分析了失效率与广义强度和广义应力的均值及变异系数的关系。
What's more, the relation between the probability and the average values and variation coefficients of generalized stress and generalized strength is analyzed.
该方法对目标函数无连续、可微等要求，能较快地收敛到全局最优权系数。
Usually, the algorithm can quickly converge to the global optimum weight coefficients.
新算法只用更新一少部分的系数，因此它的收敛速度加快了，计算量大大减小了。
Because of fewer coefficients updated in the new algorithm, the convergence speed increases and the computational effort decreases significantly.
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