Can I read Domain Partitioning Material Point Method for Simulating Shock in Polycrystalline Energetic Materials on EtoBox?

Domain Partitioning Material Point Method for Simulating Shock in Polycrystalline Energetic Materials by Ran Ma; WaiChing Sun; Catalin R. Picu; Tommy Sewell is a Engineering article available to read on EtoBox.

What is Domain Partitioning Material Point Method for Simulating Shock in Polycrystalline Energetic Materials about?

Heterogeneous energetic materials (EMs) subjected to mechanical shock loading exhibit complex thermo-mechanical processes which are driven by the high temperature, pressure, and strain rate behind the shock. These lead to spatial energy localization in the microstructure, colloquially known as “hotspots” where chemistry may commence and possibly culminating in detonation. Shock-induced pore collapse is one of the dominant mechanisms by which localization occurs. In order to physically predict the shock sensitivity of energetic materials under these extreme conditions, we formulate a multiplicative crystal plasticity model with key features inferred from molecular dynamics (MD) simulations. Within the framework of thermodynamics, we incorporate the pressure dependence of both monoclinic elasticity and critical resolved shear stress into the crystal plasticity formulation. Other fundamental mechanisms, such as strain hardening and pressure-dependent melting curves, are all inferred from atomic-scale computations performed across relevant intervals of pressure and temperature. To handle the extremely large deformation and the evolving geometry of the self-contact due to pore collapse,

Who reads Domain Partitioning Material Point Method for Simulating Shock in Polycrystalline Energetic Materials?

Author

Ran Ma; WaiChing Sun; Catalin R. Picu; Tommy Sewell

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Engineering (Physical Sciences)