摘要
根据多层神经网络映射存在定理 ,提出了一种结构可靠性分析的新方法 .该方法是利用二孤岛遗传算法优化来拟合结构系统极限状态函数的神经网络 ,进而针对该神经网络求解结构系统可靠性指标 ,避开了极为复杂的求解真实极限状态函数的过程 .通过不同类型的数值实验 ,证明建立的神经网络可以很好的拟合真实极限状态函数 。
A new structural reliability analysis method based on the multilayer neutral network mapping theorem is suggested.To avoid the complex process of solving the real limit function,it optimizes the neutral network structure to simulate the real limit function of the structure system with GA and computes the reliability index.The numerical tests prove that the neutral network model made by this method can simulate the real limit function well and can compute the reliability index accurately.
出处
《天津大学学报(自然科学与工程技术版)》
EI
CAS
CSCD
2000年第6期716-720,共5页
Journal of Tianjin University:Science and Technology
基金
国家自然科学基金资助项目! (596780 0 1 )