Buckle connection performance evaluation method for instrument desk dynamic energy absorption test

The invention discloses a buckle connection performance evaluation method for a dynamic energy absorption test of an instrument desk, and the main design conception of the invention lies in that a buckle mechanism to be tested is decomposed into a buckle body and a supporting surface, modeling is carried out on each decomposed assembly according to a grid with a preset size, and especially, modeling is carried out on each assembly according to the grid with the preset size. Rigid body material attributes are given to the assembly representing the supporting face, mass scaling parameters and contact boundary conditions of the buckle mechanism model are set, finally, dynamic stretching simulation is conducted on the buckle mechanism finite element model, and the buckle connection performance is determined based on changes of the stretching state. According to the method, under the condition that no mold or real object exists in the development stage, the performance of the buckle can be accurately analyzed and