【摘要】 提出了基于Monte Carlo法的用于结构可靠度计算的子域抽样法,其基本思想是以有界域模拟替代无界失效域。介绍了服从某种概率分布的变量在给定子区间内产生随机数的方法,并按照这种方法在选定的有界子区域内进行抽样模拟计算失效概率,并编制了仿真程序将抽样计算过程可视化。经算例验证,该算法抽样效率很高,且具有较高的模拟计算精度。更多还原

【Abstract】 Based on the Monte Carlo method, the subdomain sampling method, which is applied to calculate structural reliability index, is proposed. The basic principle of this method is the definite simulation instead of the infinite failure domain. The technique of this method, which provides the random variables subordinate to certain types of probability distribution in selected partial intervals, and conducting the sampling simulation in the definite partialintervals to calculate the probability of failure are introduced. Meanwhile, the emulation program is compiled to visualize the process of sampling calculation. Through the verfication of an example, the efficency of sampling and the precision of simualating calculation of this method are higher.更多还原