Enhancements to the Tonge-Ramesh Ceramic Failure Model for Use in Eulerian Simulations

Abstract

The Tonge-Ramesh material model has been incorporated into 3 computational frameworks (EPIC, ALE3D, and ALEGRA)used by the US Army Research Laboratory for the simulation of terminal ballistic problems. Southwest Research Institute(SwRI) report number 1817637.03 noted that in the Lagrangian code EPIC, the Tonge-Ramesh model was relatively robust but was computationally expensive compared to simpler models, like Johnson-Holmquist-Beissel, and the damaged material was too strong. This work confirms the SwRI findings when using a different numerical method and identifies further limitations of the original model when it is used in an advecting framework. A simplified version of the model that is faster, more robust, and better suited for use in codes with advection, like ALE3D, is presented in this work along with evaluations of both the original and the updated models in ALE3D.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 14, 2016
Accession Number
AD1017209

Entities

People

  • Andrew L. Tonge

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Abstracts
  • Advection
  • Boron Carbides
  • Bulk Modulus
  • Equations
  • Geometry
  • Granular Materials
  • Materials
  • Mechanics
  • Military Research
  • Molecular Dynamics
  • Particle Size
  • Plastic Properties
  • Shear Modulus
  • Simulations
  • Strain Rate
  • Test And Evaluation

Readers

  • Atmospheric Remote Sensing.
  • Computational Fluid Dynamics (CFD)
  • Computational Modeling and Simulation