Abstract
This research focuses on Mode I fracture in rock, vital for tensile fracture resistance in rock engineering such as blasting and hydraulic fracturing. Considering the fact that natural rock often shows anisotropic mechanical properties, we use a GPGPU-accelerated 3-D finite discrete element method (3-D FDEM) with an orthotropic elastic model and a new self-consistent scheme (NSCS) for a comprehensive understanding of anisotropic rock fracture behavior. The study involves numerical simulations of the straight-notched disc bend (SNDB) test to evaluate Mode I fracture toughness under both quasi-static and dynamic loads. We extensively analyze the Mode I fracture process, including fracture patterns and the influence of loading rates on toughness. These insights are crucial for managing rock fractures in various engineering applications, highlighting the importance of considering anisotropy in rock mechanics.
https://ror.org/05q92br09 
