Role of the sample thickness in planar crack propagation

P. Barai, Phani Kumar V. V. Nukala, M.J. Alava, S. Zapperi

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)
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Abstract

We study the effect of the sample thickness in planar crack front propagation in a disordered elastic medium using the random fuse model. We employ different loading conditions and we test their stability with respect to crack growth. We show that the thickness induces characteristic lengths in the stress enhancement factor in front of the crack and in the stress transfer function parallel to the crack. This is reflected by a thickness-dependent crossover scale in the crack front morphology that goes from from multiscaling to self-affine with exponents, in agreement with line depinning models and experiments. Finally, we compute the distribution of crack avalanches, which is shown to depend on the thickness and the loading mode.
Original languageEnglish
Article number042411
Pages (from-to)1-7
JournalPhysical Review E
Volume88
Issue number4
DOIs
Publication statusPublished - 2013
MoE publication typeA1 Journal article-refereed

Keywords

  • fracture

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