EPIC-3, a Computer Program for Elastic-Plastic Impact Calculations in 3 Dimensions

Abstract

A three-dimensional computer program for high-velocity impact problems is described. The numerical technique is based on a Lagrangian finite- element formulation in which the equations of motion are integrated directly rather than through the traditional stiffness matrix approach. Tetrahedron elements are formulated for large strains and displacements, and nonlinear material strength and compressibility effects are included to account for elastic-plastic flow and wave propagation. A sliding surfaces capability is also included.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1977
Accession Number
ADA043281

Entities

People

  • Gordon R. Johnson

Organizations

  • Honeywell International, Inc.

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Composite Materials
  • Computer Programs
  • Dynamic Response
  • Equations
  • Equations Of Motion
  • Geometry
  • Hydrostatic Pressure
  • Kinetic Energy
  • Materials
  • Materials Laboratories
  • Mechanics
  • Military Research
  • Momentum
  • Plastic Flow
  • Shear Stresses
  • Three Dimensional
  • Wave Propagation

Fields of Study

  • Physics

Readers

  • Explosive Engineering.
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Mechanical Engineering/Mechanics of Materials.