Simulation And Experimental Study Of The Impact Of State Foam Sandwich Panels

Foam sandwich panel is an excellent energy absorbing material, its ultra-light, relatively highenergy absorption properties, has been widely used in the aviation aircraft, aerospace equipment,high-speed trains, vehicles, marine and other major buildings dampingbuffer devices. Its structure bythe sandwich structure of the high-porosity porous metal foam, the classic structure of thecomposition is constituted by the upper and lower metal plates and the porous core layer (grille, themetal foam and the matrix material, etc.). The main role of the upper and lower plates bear thestructure of a relatively high resistance to bending and tensile strength, the center core layer dissipateenergy.This article uses the LAB Drop Shock Testing Machine pulse excitation applied to therectangular plate clamped foam sandwich, and measure the dynamic response of the center point,from the experimental study and numerical simulation of the system work.Through the application of finite element program MSC.nastran foam sandwich panels byhalf-sine pulse excitation dynamics response is simulated on a PC. The acceleration responsecomparison of the numerical results and experimental data show that the reliability of the foamsandwich panels established in the article equivalent finite element model.The final end MSC.dytran software using the model in the environment of the high-speed impactresponse and energy absorption analysis, and the conclusion is the same conclusion as the othermodels, further proof of the reliability of the model.