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

doi:10.1016/j.ijrmms.2014.09.015

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 journal › Article › peer-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 language	English (US)
Pages (from-to)	277-282
Number of pages	6
Journal	International Journal of Rock Mechanics and Mining Sciences
Volume	72
DOIs	https://doi.org/10.1016/j.ijrmms.2014.09.015
State	Published - Dec 1 2014

Keywords

Anisotropy
Dynamic fracture
Rate-dependent frictional plasticity

ASJC Scopus subject areas

Geotechnical Engineering and Engineering Geology

Online availability

10.1016/j.ijrmms.2014.09.015

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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.",

keywords = "Anisotropy, Dynamic fracture, Rate-dependent frictional plasticity",

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note = "This project has been performed under the auspices of the US Department of Energy. The Los Alamos National Laboratory is operated by Los Alamos National Security, LLC for the NNSA of the U.S. DOE under Contract no. DE-AC52-06NA25396 . The authors wish to express their gratitude to Scott Broome of Sandia National Laboratories for providing experimental data for granite. The experimental study was sponsored by the SPE multi-institutional and interdisciplinary group of scientists and engineers from National Security Technologies (NSTec) , Lawrence Livermore National Laboratory (LLNL) , Los Alamos National Laboratory (LANL) , Sandia National Laboratories (SNL) , the Defense Threat Reduction Agency (DTRA) , and the Air Force Technical Applications Center (AFTAC) .",

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AU - Zubelewicz, A.

AU - Rougier, E.

AU - Ostoja-Starzewski, M.

AU - Knight, E. E.

AU - Bradley, C.

AU - Viswanathan, H. S.

N1 - This project has been performed under the auspices of the US Department of Energy. The Los Alamos National Laboratory is operated by Los Alamos National Security, LLC for the NNSA of the U.S. DOE under Contract no. DE-AC52-06NA25396 . The authors wish to express their gratitude to Scott Broome of Sandia National Laboratories for providing experimental data for granite. The experimental study was sponsored by the SPE multi-institutional and interdisciplinary group of scientists and engineers from National Security Technologies (NSTec) , Lawrence Livermore National Laboratory (LLNL) , Los Alamos National Laboratory (LANL) , Sandia National Laboratories (SNL) , the Defense Threat Reduction Agency (DTRA) , and the Air Force Technical Applications Center (AFTAC) .

PY - 2014/12/1

Y1 - 2014/12/1

N2 - 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.

AB - 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.

KW - Anisotropy

KW - Dynamic fracture

KW - Rate-dependent frictional plasticity

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

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Keywords

ASJC Scopus subject areas

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