Application of stochastic response surface method in the structural stochastic response

Classical response surface method approaches the structural stochastic response using a group of general polynomials,but this method can not guarantee convergence.Stochastic response surface method can compensate the drawback of the classical response surface.Two numerical examples and a practical example of an aero engine disk were presented herein to validate stochastic response surface method.The results show that,with the increasing order of polynomial chaos,the probability density curve of a response approaches the results from Monte Carlo simulations.