Extension and Validation of a Hybrid Particle-Finite Element Method for Simulation of Impact and Fragmentation

University Of Texas At Austin, Austin TX

Investigators

Abstract

Hybrid particle-finite element methods offer an approach to modeling particular impact problems not well suited to simulation with conventional Eulerian, Lagrangian, or particle codes. This research will extend and validate a new hybrid particle-finite element technique, in which particles are used to model contact-impact and volumetric deformation while finite elements are employed to represent interparticle tension forces and elastic-plastic deviatoric deformation. Validation will be performed via simulations of published hypervelocity impact experiments. Formulation of the method employs a novel thermomechanical Hamiltonian approach. The research will provide a robust computer simulation technique for a wide range of impact and fragmentation problems.