Author(s)

A.M. Rajendran

Abstract

This paper presents the salient features of a spall/microcracking based ceramic damage model and its capabilities in predicting the response of alumina under shock and impact, and projectile penetration. Initially, values for the model parameters were determined using data from planar plate impact (shock) experiments at velocities below and above the Hugoniot elastic limit (HEL). The model's predictive capabilities were examined for penetration of a tungsten rod and a bullet into layered targets. 1 Introduction There is a strong need for accurate material models in advanced finite element codes that are often used in armor/anti-armor design studies. Since ceramics are important armor materials, several damage models under shock and impact loading conditions were developed during the past decade. The high strain

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