Study on Analytical Prediction Method for Plastic Response of Folded Sandwich Plates Under Explosion Impact Loads

This paper analyzes the structural response of folded steel sandwich plates under an air explosion shock load. According to the analytical calculation method of the sandwich plate's structural deformation, the structural deformation prediction formula under the action of explosion impact load is obtained. At the same time, the nonlinear finite element analysis software ABAQUS was used to simulate the related calculation conditions and verify the structural plastic deformation formula. On this basis, the sensitivity analysis of parameters of sandwich panel structural size was conducted to study the influence of parameters on sandwich panel structural size, and the applicability of the analytical calculation method for folding sandwich panel was verified, providing a reference for the design and impact resistance evaluation of steel folding sandwich panel.