Multi-scale modeling of microstructure dependent intergranular brittle fracture using a quantitative phase-field based method

Pritam Chakraborty, Yongfeng Zhang, Michael R. Tonks

Research output: Contribution to journalArticle

28 Scopus citations

Abstract

The fracture behavior of brittle materials is strongly influenced by their underlying microstructure that needs explicit consideration for accurate prediction of fracture properties and the associated scatter. In this work, a hierarchical multi-scale approach is pursued to model microstructure sensitive brittle fracture. A quantitative phase-field based fracture model is utilized to capture the complex crack growth behavior in the microstructure and the related parameters are calibrated from lower length scale atomistic simulations instead of engineering scale experimental data. The workability of this approach is demonstrated by performing porosity dependent intergranular fracture simulations in UO2 and comparing the predictions with experiments.

Original languageEnglish (US)
Pages (from-to)38-52
Number of pages15
JournalComputational Materials Science
Volume113
DOIs
StatePublished - Feb 15 2016

All Science Journal Classification (ASJC) codes

  • Computer Science(all)
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Physics and Astronomy(all)
  • Computational Mathematics

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