The Addition of Cohesive Wedge Elements into the Elastic Plastic Impact Computation (EPIC) Code

Abstract

This report documents the addition of cohesive wedge elements into the 2017 beta version of the Elastic Plastic Impact Computation (EPIC) code. These elements allow the attachment of triangular-faced tetrahedral elements. This new capability allows symmetric brick elements (24 tetrahedral elements arranged in a hexahedron) to be attached to other symmetric brick elements using one layer of cohesive wedge elements. The cohesive wedge elements use the cohesive material model(implemented previously by Beissel) to simulate bond strength. The advantage of using cohesive elements, instead of solid elements, is that very thin layers can be used without affecting the time increment.

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Document Details

Document Type
Technical Report
Publication Date
Jul 30, 2020
Accession Number
AD1105160

Entities

People

  • Charles A. Gerlach
  • Timothy J Holmquist

Organizations

  • Southwest Research Institute

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Adhesives
  • Attachment
  • Composite Materials
  • Composite Structures
  • Computations
  • Contracts
  • Delamination
  • Elements
  • Generators
  • Geometry
  • Materials
  • Metal Plates
  • Military Research
  • Particles
  • Rolled Homogeneous Armor
  • Thickness
  • Tungsten Carbides

Readers

  • Computational Fluid Dynamics (CFD)
  • Materials Science and Engineering.
  • Surface Coatings Technology.