Evaluation of the Material Point Method within CTH to Model 2-Dimensional Plate Impact Problems

Abstract

The material point method (MPM) is a mixed Eulerian and Lagrangian computational method that allows for the discretization of solid bodies into material points carrying the full material state of the original body. This method is being evaluated as a new implementation within CTH, a code originally developed by Sandia National Laboratories, as a way of eventually dealing with fracture and other difficult solid mechanics scenarios. Applying CTH with MPM to a 2-dimensional plate impact problem yields multiple issues that must be examined. Issues with void compression upon initial impact, inhomogeneous particle states within a single cell, and inconsistencies within results obtained at different mesh resolutions are all discussed.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2014
Accession Number
ADA610512

Entities

People

  • Denzell Bolling

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Bodies
  • Boundaries
  • Engineering
  • Equations
  • Geometry
  • High Pressure
  • Materials
  • Mechanical Engineering
  • Mechanics
  • Military Research
  • Particles
  • Physics
  • Simulations
  • Test And Evaluation
  • Two Dimensional
  • Universities
  • Waves

Readers

  • Calculus or Mathematical Analysis
  • Environmental Engineering.
  • Explosive Engineering.