Numerical methods and key issues for the study of particle material fragmentation behavior-A review

The fragmentation behavior of particle materials is widely observed in natural environments, engineering applications, and other fields. It is an important factor contributing to natural disasters and engineering accidents. This paper aims to provide a selective overview of research methods for studying particle fragmentation behavior. The review primarily focuses on numerical methods for investigating particle fragmentation and key problems of interest in this field. Firstly, it classifies and summarizes the numerical methods based on the discrete element method, the coupling of discrete element and finite element method, the finite element method, and the peridynamics theory. It outlines the proposal, implementation process, development history, major applications, and existing issues associated with each method, suggesting possible solutions where applicable. Secondly, it discusses key issues in particle fragmentation research, including fragmentation mechanisms, fragmentation criteria, major influencing factors, size distribution, and energy problems. Finally, the paper concludes with an outlook on future research efforts in the field of particle fragmentation.