Generalized Finite Element Gap Model.

Abstract

Abstract : This report covers a number of topics related to the application of finite element methods to ballistic structural problems. All of these topics are extensions and modifications of finite element formulations and computer codes previously developed in this technical area. The first topic to be discussed involves an extension of so-called gap element formulation. The second topic of this report will deal with another modification to the original gap element formulation. The third topic to be dealt with in this report consists of adding rate-dependent plasticity to the gap computer code. The fourth and the last topic to be discussed involves some preliminary investigation of code combinations. During a number of past investigations, many different but related finite element codes have been developed for ballistic applications. The purpose of the codes is to handle a number of different configurations, material properties, and loading conditions.