© World Scientific Publishing Company. A modified smoothed particle hydrodynamics (SPH) method is applied to simulate the dynamic tensile failure of rock-like heterogeneous materials. The material heterogeneities are represented by different mechanical properties with a Weibull distribution at different particles over the specimen. An elasto-plastic-damage model is adopted to simulate material failure. Numerical simulations are performed for three specimens with different degrees of heterogeneity under quasi-static and dynamic loading conditions, respectively. The effects of strength criterion coefficient b on the predicted tensile strength are also discussed. Results show that the material heterogeneity has significant effect on the dynamic tensile failure, especially at a higher strain rate loading condition. At a lower strain rate, the failure mode of heterogeneous material is very much similar to that of homogeneous materials. At a higher strain rate, plenty of micro cracks occur forming a failure band in the tension zones. Moreover, the value of strength criterion coefficient b has a considerable influence on the tensile strength under a higher loading rate.
Wang, Q., Ma, G., & Wang, X. J. (2015). Numerical Simulation on Tensile Failure of Rock-Like Heterogeneous Material Using a Modified SPH Method. International Journal of Computational Methods, 12(6), 1550039-1 - 1550039-25. https://doi.org/10.1142/S0219876215500395