Numerical Simulation of Impacts involving a Collapsible Nonlinear Multilayer Structure

—A numerical model for the simulation of dynamic compression of a nonlinear multilayer structure subjected to transient compressive excitation is described and tested. It is shown that impacts induce a chaotic collapse of crumple layers. The simulations predict shock pulses and intralaminar forces. Simulated shock pulses that a free-falling mass is subjected to, and the corresponding animated deformation histories of the layers, are compared with the high-speed videography. Cushioning performance maps and shock response spectrums maps obtained from the simulations are presented.

• Type: Conference
• Year: 2007
• Where: WCE
• Authors: Michael A. Sek
• Keywords: Shock Pulses, Shock Response Spectrums, Simulations Predict Shock, WCE 2007, WCE 2008