Paper Title:
Mixed-Mode Crack Propagation in Functionally Graded Materials
  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 mixedmode 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.

  Info
Periodical
Materials Science Forum (Volumes 492-493)
Edited by
Omer Van der Biest, Michael Gasik, Jozef Vleugels
Pages
409-414
DOI
10.4028/www.scientific.net/MSF.492-493.409
Citation
J. H. Kim, G. H. Paulino, "Mixed-Mode Crack Propagation in Functionally Graded Materials", Materials Science Forum, Vols. 492-493, pp. 409-414, 2005
Online since
August 2005
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Price
$32.00
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