Alneasan, Mahmoud, Mahmoud Behnia, and Raheb Bagherpour. "Analytical and numerical investigations of dynamic crack propagation in brittle rocks under mixed mode loading." Construction and Building Materials 222 (2019): 544-555.

Determination of dynamic fracture parameters of brittle rocks is of particular importance in assessing rock structure stability, rock strength and rock behavior under the effect of dynamic loading. Major dynamic fracture parameters including initial crack extension angle, stress intensity factors, fracture toughness and crack propagation path are directly affected by crack propagation speed (CPS). In this study, the dynamic form of the maximum tangential stress criterion (DMTS-Criterion) was used to determine the fracture parameters as a function of CPS under three loading conditions: 1) pure mode I, 2) pure mode II, and 3) mixed mode I-II. In addition, a dynamic two-dimensional crack propagation code (DTDCPC) was developed using the DDM to predict the crack trajectory in cracked semi-circular bend (SCB) specimens for different CPS values. CPS ranged from zero (the fully static case) to the Rayleigh wave speed … Journal Papers