An Assessment of Peridynamics for Pre and Post Failure Deformation

Abstract

The peridynamics method was examined in the context of deformation conditions commonly observed before and after dynamic material failure by using a combination of full simulations, targeted numerical techniques, and analytic solutions. The results show numerical dispersion and boundary condition artifacts expected with nonlocal methods, anomalous volume-shear coupling related to the numerical grid, and limitations of the current material model implementations for large strain and impact simulations. Implications of these observations and potential modifications are discussed. Differences and similarities between peridynamics and conventional finite element formulations are also explored.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 2011
Accession Number
ADA553977

Entities

People

  • Richard Becker
  • Richard J. Lucas

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Computational Fluid Dynamics
  • Computational Science
  • Department Of Defense
  • Differential Equations
  • Elastic Materials
  • Elastic Waves
  • Equations
  • High Performance Computing
  • Mechanical Properties
  • Mechanics
  • Modulus Of Elasticity
  • Peridynamics
  • Shape
  • Shear Stresses
  • Stress Waves
  • Wave Propagation
  • Yield Strength

Readers

  • Computational Modeling and Simulation
  • Structural Dynamics.
  • Systems Analysis and Design