Recent advances in developing the generalized interpolation material point method for simulating brittle fracture based on molecular dynamics

Based on the recent research results on multiscale modeling and simulation of energetic composites under simple loading conditions [1, 2], an effort is being made to develop a hierarchical multiscale approach based on molecular dynamics (MD) and the generalized interpolation material point method (GIMP). Basic mechanical behaviors, such as elastic and damage responses to external loading conditions, are predicted at the molecular level using MD. The MD results are then employed to formulate an elastodamage model within the GIMP framework. The multiscale model-based simulation procedure is used to deal with large deformation and fracture. In this conference, recent computational results will be presented and future research tasks will be discussed based on the findings.