An Explicit Method Based on Implicit Expression of Neural Network for Structure Reliability Application

According to the problem that performance functions for structures are difficult to be explicit expressed,a method based on neural network was utilized to transform the implicit function into an explicit expression.The performance of highly nonlinear mapping for neural network was adopted to supply an explicit expression,so the method such as firstorder reliability method can be used again.Examples indicate that the method is available and exact for implicit expressed performance function,and it is a new and effective way for structure reliability analysis.