Mixed-mode crack propagation in functionally graded materials

Jeong Ho Kim, Glaucio H. Paulino

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents numerical simulation of mixed-mode crack propagation in functionally graded materials by means of a remeshing algorithm in conjunction with the finite element method. Each step of crack growth simulation consists of the calculation of the mixed-mode stress intensity factors by means of a non-equilibrium formulation of the interaction integral method, determination of the crack growth direction based on a specific fracture criterion, and local automatic remeshing along the crack path. A specific fracture criterion is tailored for FGMs based on the assumption of local homogenization of asymptotic crack-tip fields in FGMs. The present approach uses a user-defined crack increment at the beginning of the simulation. Crack trajectories obtained by the present numerical simulation are compared with available experimental results.

Original languageEnglish (US)
Title of host publicationFunctionally Graded Materials VIII, FGM2004 - Proceedings of the 8th International Symposium on Multifunctional and Functionally Graded Materials, (FGM2004)
PublisherTrans Tech Publications Ltd
Pages409-414
Number of pages6
ISBN (Print)0878499709, 9780878499700
DOIs
StatePublished - 2005
Externally publishedYes
Event8th International Symposium on Multifunctional and Functionally Graded Materials, FGM2004 - Leuven, Belgium
Duration: Jul 11 2004Jul 14 2004

Publication series

NameMaterials Science Forum
Volume492-493
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Other

Other8th International Symposium on Multifunctional and Functionally Graded Materials, FGM2004
Country/TerritoryBelgium
CityLeuven
Period7/11/047/14/04

Keywords

  • Crack propagation
  • Finite element method
  • Functionally graded materials
  • Interaction integral method

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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