Research on reliability calculation method of pressure spheriacal shell based on adaptive Kriging
In order to study the reliability calculation of pressure shell,a reliability calculation method of pressure shell based on adaptive Kriging is proposed in this paper.This method mainly includes:obtaining the corresponding bearing capa-city of the sample points based on the finite element method on the basis of experiment design,using adaptive Kriging and ERF learning function to construct the structural failure equation,and carrying out reliability calculation on the basis of fail-ure equation.The calculation results of a spheriacal pressure shell show that the deviation of calculation results of 10 verifica-tion sample pointes is less than 0.5‰,it is also pinted that the method has high accuracy and calculation efficiency.Based on the calculation results,it is proposed that the convergence index of learning function should be appropriately adjusted with the accuracy of the calculation method in the process of developing adaptive methods to establish Kriging model.This re-search can provide reference for structural reliability calculation without failure equation.
pressure spherical shelladaptive Krigingreliabilitylearning functionconvergence index
万方数据
维普
