Abstract:

Taking full advantage of the multi-grid method to combine the processes of the grid discretion and the solution, the multi-grid method was applied to solving the structure dynamic response problem. A solving program by the multi-grid method was compiled, and the program was validated by calculation cases. Different multi-grid circulative algorithms were applied to calculate the dynamic response of the lamella, showing it was characterized by high precision,rapid convergence, and easy aceomplishment. The comparison by examples of different circulative algorithms indicated that the suggested N circulation algorithm is superior to the commonly used V and W circulations.

Key words: computational mechanics, multi-grid method, structure dynamic response, finite element analysis, circulation arithmetic