Modeling of cohesive crack growth in partially saturated porous media; a study on the permeability of cohesive fracture |
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Authors: | O R Barani A R Khoei M Mofid |
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Affiliation: | (1) Civil Engineering Department, National Institute of Technology, Jamshedpur, India;(2) Civil Engineering Department, Indian Institute of Technology, Kharagpur, India |
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Abstract: | Modeling the water flow in cohesive fracture is a fundamental issue in the crack growth simulation of cracked concrete gravity
dams and hydraulic fracture problems. In this paper, a mathematical model is presented for the analysis of fracture propagation
in the semi-saturated porous media. The solid behavior incorporates a discrete cohesive fracture model, coupled with the flow
in porous media through the fracture network. The double-nodded zero-thickness cohesive interface element is employed for
the mixed mode fracture behavior in tension and contact behavior in compression. The modified crack permeability is applied
in fracture propagation based on the data obtained from experimental results to implement the roughness of fracture walls. |
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Keywords: | |
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