Wrinkling Analysis Using Improved Dynamic Relaxation Method

The purpose of this paper is to propose a new method to reduce the calculation cost of the dynamic relaxation method. The proposed method combines the dynamic relaxation method with a static iterative method via two switching rules. In this method, the numerical scheme used in the analysis is selected as the situation of the analysis. An unstable region of the analysis in which the static iterative method cannot obtain the converged solution is performed by the robust dynamic relaxation method. Then a stable region that is costly to be solved by the dynamic relaxation method is performed by the efficient iterative method. By switching the analysis methods like this, the proposed method can use only the advantages of each method and complement each drawback. The performance of the new method is verified through a comparison of numerical analyses for the wrinkled membrane with the new method and conventional methods.