Journal
ENGINEERING FRACTURE MECHANICS
Volume 96, Issue -, Pages 701-723Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfracmech.2012.10.003
Keywords
Thermo-hydro-mechanical model; Extended-FEM; Partition of unity; Porous media; Discontinuity
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Funding
- Iran National Science Foundation (INSF)
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In this paper, the extended finite element method is presented for thermo-hydro-mechanical (THM) modeling of impermeable discontinuities in saturated porous media. The X-FEM technique is applied to the THM governing equations for the spatial discretization, followed by a generalized Newmark scheme for the time domain discretization. The displacement field is enriched by the Heaviside and crack tip asymptotic functions, and the pressure and temperature fields are enriched by the Heaviside and appropriate asymptotic functions. The process is accomplished by partitioning the domain with triangular sub-elements. Numerical examples are presented to demonstrate the capability of proposed technique in saturated porous soils. (C) 2012 Elsevier Ltd. All rights reserved.
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