Modeling Nonlinear and Dynamic Mechanical Behavior

Abstract

Highly nonlinear and dynamic mechanical behavior involving impact, crash, and blast is common in some of the work done at the Johns Hopkins University Applied Physics Laboratory (APL). Modeling these behaviors involves finite element analysis (FEA) that reaches beyond typical static analyses. APL researchers are able to model complex nonlinear dynamic behavior without oversimplifying or converting the problem to a so-called equivalent static problem. Presented here is an overview of dynamics and nonlinearity and a brief summary of the options available for modeling these behaviors. The article concludes with several case studies that demonstrate how APL’s expertise in this area contributes to the safety of our nation’s warfighters and diplomatic personnel.