框架可靠度计算的新方法

基于随机有限元的梯度优化算法引入拥有随机参数的框架可靠度分析.并编制计算程序与精确解Monte-Carlo法的计算结果进行了对比,证明该文方法用于框架结构可靠度分析是可行、可靠的,既避免了Monte-Carlo法计算量过大的缺点,又比传统的定值分析方法更合理,更贴近实际.

New Method for Frame Reliability

The gradient optimization algorithm based on the stochastic finite element was adopted to analyze the reliability of the frame with stochastic parameters.A computer procedure was programed and a contrast was carried out between the compute result of this method and that of the Monte Carlo method.The conclusion is proved that this method used in the frame reliability analysis is feasible and reliable.This method not only has avoided the oversized load of Monte Carlo computation,but also is more reasonable than the traditional definite value analysis method,more close to the reality.