Nonlocal Control of Fracture Propagation in Numerical Simulations

Abstract

A nonlocal algorithm is used to control the failure propagation rate in finite element simulations. An extension of the method, which creates smooth gradient fields near the fracture front, is explored as a means for improving the advection of discontinuous fields associated with cracks. The algorithms are evaluated by varying fracture propagation speed and assessing crack size changes with advection.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2013
Accession Number
ADA583939

Entities

People

  • Richard C. Becker

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Advection
  • Algorithms
  • Bulk Modulus
  • Computations
  • Crack Propagation
  • Crack Tips
  • Cracks
  • Elastic Properties
  • Equations
  • Geometry
  • High Pressure
  • Leading Edges
  • Materials
  • Military Research
  • Simulations
  • Trailing Edges
  • Two Dimensional

Readers

  • Ocean-Atmosphere Mesoscale Modeling, Data Assimilation, and Flux Boundary Layers
  • Plasma Physics / Magnetohydrodynamics
  • Structural Health Monitoring of Composite Structures.