Numerical simulation method for shock vibration based on finite element substructure

Abstract For engineering problems such as shock vibration, finite element simulation is a very effective method, but for too large models, meshing them in finite element software generates a large number of grid cells, which is time-consuming to compute and limits the application of solid cells in the simulation of large models, so the use of the substructure method will effectively solve the problem. In this paper, we will first explore the influence of the mesh size on the simulation results to get the most suitable mesh. This paper will first investigate the effect of grid size on the simulation results to get the most appropriate grid size, and then use the substructure method to encrypt the grid of the part that needs to be studied and analyze it individually, and at the same time, carry out the validation experiments to compare the results with the substructure simulation results, to investigate the reasonableness of the substructure method in the propagation process of shock vibration.