A mechanisms-based model for dynamic behavior and fracture of geomaterials

A. Zubelewicz, E. Rougier, M. Ostoja-Starzewski, E. E. Knight, C. Bradley, H. S. Viswanathan

Research output: Contribution to journalArticlepeer-review

Abstract

A mechanisms-based fracture model applicable to a broad class of earth and earth-like materials is presented. The key features the model captures are: (1) material anisotropy; (2) rate-sensitive directional fracture; (3) dilatational friction; (4) dynamic overstress in loading extremes, where the rate of supplied energy is not fully compensated by the rate of the energy redistribution and release and, lastly, (5) spatial stochasticity due to material heterogeneity. In comparison with more traditional phenomenological descriptions, the contribution of the proposed approach is the utilization of tensor representation theory; the theory is suitable for converting observed deformation and fracture mechanisms into a precise mathematical description of the material's behavior.

Original languageEnglish (US)
Pages (from-to)277-282
Number of pages6
JournalInternational Journal of Rock Mechanics and Mining Sciences
Volume72
DOIs
StatePublished - Dec 1 2014

Keywords

  • Anisotropy
  • Dynamic fracture
  • Rate-dependent frictional plasticity

ASJC Scopus subject areas

  • Geotechnical Engineering and Engineering Geology

Fingerprint

Dive into the research topics of 'A mechanisms-based model for dynamic behavior and fracture of geomaterials'. Together they form a unique fingerprint.

Cite this