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

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 have been used for the uniaxial stress wave problem in a linear-hardening material, and the results are compared with an exact analytical solution in order to evaluate accuracy and stability. Then, additional numerical results for perfectly-plastic materials are discussed 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 in order to show the lateral effect.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1985
Accession Number
ADA157901

Entities

People

  • J. D. Vasilakis
  • J. E. Flaherty
  • P. C. Chen

Organizations

  • United States Army Armament Research, Development and Engineering Center

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Accuracy
  • Computer Simulations
  • Dynamic Response
  • Elastic Waves
  • Hardening
  • Materials
  • Mathematics
  • Military Research
  • Modulus Of Elasticity
  • Molecular Dynamics
  • Projectiles
  • Strain Hardening
  • Stress Waves
  • Stresses
  • Two Dimensional
  • Waves
  • Weapons

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Structural Dynamics.
  • ballistics.