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A ϑ method-based numerical simulation of crack growth in linear elastic fracture

  • Giovanni Formica*
  • , Stefania Fortino
  • , Mikko Lyly
  • *Corresponding author for this work
  • Roma Tre University
  • CSC - IT Center for Science
  • Helsinki University of Technology

Research output: Contribution to journalArticleScientificpeer-review

Abstract

This paper presents a method for the automatic simulation of quasi-static crack growth in 2D linear elastic bodies with existing cracks. A finite element algorithm, based on the so-called θ{symbol} method, provides the load vs. crack extension curves in the case of rectilinear crack propagation. Since the approach is both theoretically general and simple to be performed from a computational point of view, it could be extended for describing the phenomenon of crack growth in different fracture mechanics contexts.

Original languageEnglish
Pages (from-to)1727-1738
Number of pages12
JournalEngineering Fracture Mechanics
Volume74
Issue number11
DOIs
Publication statusPublished - 1 Jul 2007
MoE publication typeA1 Journal article-refereed

Funding

The authors whish to thank Prof. Rolf Stenberg who made possible the collaboration work for this research at the Institute of Mathematics (HUT, Finland). The research was funded in the context of the following projects: (i) “SMART Systems, New Materials, Adaptive Systems and their Nonlinearities. Modeling and Computation” (European Research and Training Network, identifier number: HPRN-CT-2002-00284); (ii) “A thermomechanics based fracture assessment method for structural components” (Academy of Finland, project number: 55375); (iii) “Foundation of Computational Mechanics” (Academy of Finland, project number: 121426).

Keywords

  • ϑ method
  • Finite element method (FEM)
  • Linear elastic fracture mechanics (LEFM)
  • Quasi-static crack propagation

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