Application of peridynamics to dynamic fracture process analysis of rock-like materials

摘要

Peridynamics (PD) has recently attracted significant attentions from researchers in the field of computational mechanics because it can model complex fracture process with relative ease even for 3D dynamic fracture problems. However, the number of its applications to dynamic fracture problems of rock-like materials has been very limited. This paper presents the application of a self-devolved 2D/3D PD simu- lator based on mesh-free particle discretization scheme. To overcome the significant computational burden of the PD, we implemented a PD simulator with a parallelization scheme utilizing general purpose graphic processing unit (GPGPU). The developed code is verified first using some benchmark simulations. Then, by applying the code to 2D/3D dynamic fracture problems of rock-like materials assuming high loading rate such as detonation and deflagration phenomena, the applicability and future task of the developed PD simulator are demonstrated.