Modeling hydraulic fracture propagation using cohesive zone model equipped with frictional contact capability |
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| Institution: | 1. Department of Civil Engineering, Monash University, Clayton, Victoria 3800, Australia;2. College of Mining Engineering, Taiyuan University of Technology, Taiyuan, Shanxi, China;3. Institute of Structural Mechanics, Bauhaus-Universität Weimar, Marienstraße 15, Weimar 99423, Germany;4. Institute of Computational Engineering, University of Luxembourg, Faculty of Sciences Communication and Technology, Luxembourg;5. Institute of Mechanics and Advanced Materials, School of Engineering, Cardiff University, UK;6. Intelligent Systems for Medicine Laboratory University of Western Australia, Perth, Australia |
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| Abstract: | We present a new pore pressure cohesive element for modeling the propagation of hydraulically induced fracture. The Park-Paulino-Roesler cohesive zone model has been employed to characterize the fracturing behavior. Coulomb’s frictional contact model has been incorporated into the element to model the possible shear reactivation of pre-existing natural fractures. The developed element has been validated through a series of single-element tests and an available analytical solution. Furthermore, intersection behaviors between the hydraulic fracture and the natural fracture under various conditions have been predicted using the present element, which shows good agreement with experimental results. |
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| Keywords: | Hydraulic fracturing Cohesive zone model Natural fracture Frictional contact |
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