The application of B-P constitutive equations in finite element analysis of high velocity impact

We present in this paper the application of B-P constitutive equations in f inite element analysis of high velocity impact. The impact process carries out in so quick time that the heat-conducting can be neglected and meanwhil e, the functions of temperature in equations need to be replaced by functio ns of plastic work. The material constants in the revised equations can be determined by comparison of the one-dimensional calculations with the exper iments of Hopkinson bar. It can be seen from the comparison of the calculat ion with the experiment of a tungsten alloy projectile impacting a three-la yer plate that the B-P constitutive equations in that the functions of temp erature were replaced by the functions of plastic work can be used to analy sis of high velocity impact. (C) 2001 Published by Elsevier Science Ltd.