Rescaling cohesive element properties for mesh independent fracture simulations

Jiadi Fan, Ellad B Tadmor

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In finite element simulations of fracture, cohesive elements introduce artificial compliance into the model leading to changes in properties such as the effective stiffness, effective speed of sound, and crack propagation speed. In this paper, the relation between effective material properties and cohesive element properties is determined analytically. Based on this, a simple method for rescaling the cohesive element thickness is proposed to reduce the effect of artificial compliance and to obtain mesh independent results. The effectiveness of this approach is demonstrated with four example problems: uniaxial stretching, beam bending, bar impact, and Kalthoff plate impact.

Original languageEnglish (US)
Pages (from-to)89-99
Number of pages11
JournalEngineering Fracture Mechanics
Volume213
DOIs
StatePublished - May 15 2019

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Acoustic wave velocity
Stretching
Crack propagation
Materials properties
Stiffness
Compliance

Keywords

  • Abaqus
  • Cohesive elements
  • Finite element method
  • Fracture mechanics
  • Mesh dependence

Cite this

Rescaling cohesive element properties for mesh independent fracture simulations. / Fan, Jiadi; Tadmor, Ellad B.

In: Engineering Fracture Mechanics, Vol. 213, 15.05.2019, p. 89-99.

Research output: Contribution to journalArticle

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