A FAST CALCULATION METHOD FOR LARGE-SCALE SHELL STRUCTURE BASED ON MULTIGIRD METHOD AND GPU PARALLEL COMPUTING

A novel iterative solution method for implicit finite element equations based on EBE scheme, multigrid method and GPU parallel computing method is designed to speed up the finite element analysis of a large-scale shell structure. In this method, EBE calculation strategies disassemble a global computation to a local element, which can reduce memory consumption and significantly increase the solution scale, more importantly it can improve the parallelism of implicit finite element calculation. Multigrid method can accelerate the convergence of iteration by using different mesh densities to eliminate the different frequency components of errors. And, GPU parallel computing is a novel parallel approach to reduce the time of computation with lower cost. The program of this method is compiled by CUDA (Compute Unified Device Architecture) and then implemented in a personal computer with a GTX460 graphics card, the calculation results show that the method can achieved a high computing speed-up ratio with high calculation accuracy.