Abstract:Opening mechanisms for fractures (joints) characterized by weak bonding (nano-micro scale cracks) in low-porosity rock play a key role in shale oil and shale gas development through staged hydraulic fracturing. We explore the cohesive interface strength of two weakly bonded slabs of Polymethylmethacrylate (PMMA) with nanoscale Molecular Dynamics (MD) methods, calibrated to experimental data and simulated by the Finite Element Method (FEM). The proper stress/strain state at the weakly bonded interface is determ… Show more
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