An adaptive continuum/discrete crack approach for meshfree particle methods

T. Rabczuk, T. Belytschko

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

A coupled continuum/discrete crack model for strain softening materials is implemented in a meshfree particle code. A coupled damage plasticity constitutive law is applied until a certain strain based threshold value - this is at the maximum tensile stress of the equivalent uniaxial stress strain curve - is reached. At this point a discrete crack is introduced and described as an internal boundary with a traction crack opening relation. Within the frame- work of meshfree particle methods it is possible to model the transition from the continuum to the discrete crack since boundaries and particles can easily be added and removed. The EFG method and an explicit time integration scheme is used. The integrals are evaluated by nodal integration, an integration with stress points and also a full Gauss quadrature. Some results are compared to experimental data and show good agreement. Additional comparisons are made to a pure continuum constitutive law.

Original languageEnglish
Pages (from-to)141-166
Number of pages26
JournalLatin American Journal of Solids and Structures
Volume1
Issue number1
Publication statusPublished - 2003

Keywords

  • Concrete
  • Discrete crack model
  • Loss of hyperbolicity
  • Meshfree methods

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Materials Science(all)
  • Automotive Engineering
  • Aerospace Engineering
  • Ocean Engineering
  • Mechanics of Materials
  • Mechanical Engineering

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