A new phase field fracture model for brittle materials that accounts for elastic anisotropy

Shuaifang Zhang, Wen Jiang, Michael Tonks

Research output: Contribution to journalArticle

Abstract

In this manuscript, a new phase field model of brittle fracture is proposed that accounts for any elastic anisotropy using spectral decomposition of the stress. To verify the model, both Mode I and Mode II fracture simulations were performed to ensure that the correct crack paths were predicted. Next, the fracture of face-centered cubic (FCC) and hexagonal close packed (HCP) single crystals was modeled, comparing the impact of crystal orientation on the stress–strain curve. Third, fracture in an HCP bicrystal was simulated and the impact of crystal orientation on the crack paths and stress–strain curves was studied. Finally, a polycrystal structure was simulated to study the impact of crystallographic texture on transgranular fracture.

Original languageEnglish (US)
Article number112643
JournalComputer Methods in Applied Mechanics and Engineering
Volume358
DOIs
StatePublished - Jan 1 2020

Fingerprint

elastic anisotropy
brittle materials
Brittleness
Anisotropy
Crystal orientation
Cracks
Bicrystals
cracks
Polycrystals
Brittle fracture
bicrystals
curves
polycrystals
Textures
Single crystals
crystals
Decomposition
textures
decomposition
single crystals

All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Mechanics of Materials
  • Mechanical Engineering
  • Physics and Astronomy(all)
  • Computer Science Applications

Cite this

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abstract = "In this manuscript, a new phase field model of brittle fracture is proposed that accounts for any elastic anisotropy using spectral decomposition of the stress. To verify the model, both Mode I and Mode II fracture simulations were performed to ensure that the correct crack paths were predicted. Next, the fracture of face-centered cubic (FCC) and hexagonal close packed (HCP) single crystals was modeled, comparing the impact of crystal orientation on the stress–strain curve. Third, fracture in an HCP bicrystal was simulated and the impact of crystal orientation on the crack paths and stress–strain curves was studied. Finally, a polycrystal structure was simulated to study the impact of crystallographic texture on transgranular fracture.",
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A new phase field fracture model for brittle materials that accounts for elastic anisotropy. / Zhang, Shuaifang; Jiang, Wen; Tonks, Michael.

In: Computer Methods in Applied Mechanics and Engineering, Vol. 358, 112643, 01.01.2020.

Research output: Contribution to journalArticle

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