Implementation of an optimum algorithm for structural reliability analysis based on FEM

摘要

To analyze structural reliability by the stochastic FE (finite element) method rapidly and efficiently,a method combined with the FE method and gradient optimum algorithm based on ANSYS was presented when referring to the geometric interpretation of structural reliability index.ANSYS-based development was adopted to implement it.Results of an example demonstrate that the method requires fewer FE calculations compared with the design point method and Monte-Carlo simulation,and achieves satisfactory accuracy.