Static displacement reanalysis of structures using perturbation and Pade approximation

Based on the usual perturbation and Padi approximation, a new static displacement reanalysis method for structures is developed in this paper. By this method, the accuracy of the static displacements for moderate-to-large modifications of the parameters of structures is improved. As an application of the method, a numerical example is given, and the third-order perturbation method, Kirsch's combined method and the proposed method are compared in the computational accuracy. The results show that the presented method is effective. Copyright (C) 2000 John Wiley & Sons, Ltd.