Accession Number:

ADP004952

Title:

Dynamic Response in an Elastic-Plastic Projectile Due to Normal Impact,

Descriptive Note:

Corporate Author:

ARMY ARMAMENT RESEARCH AND DEVELOPMENT CENTER WATERVLIET NY LARGE CALIBER WEAPON SYSTEMS LAB

Report Date:

1985-02-01

Pagination or Media Count:

20.0

Abstract:

A numerical study of the dynamic response of an elastic-plastic projectile due to normal impact has been made using the finite element structural response code ADINA. The projectile is a finite length circular cylindrical bar striking a rigid target. First, three central-difference, Newmark, Wilson direct integration schemes were used for uniaxial stress wave problems in a linear-hardening material and the results were compared with an exact analytical solution in order to evaluate accuracy and stability. Then, additional numerical results for perfectly-plastic materials were obtained in order to show the effect of strain-hardening. Finally, some results for a multi-linear material model based on two-dimensional elements are presented order to show the lateral effect. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE