A Multiscale Simulation Framework to Model Energetic Materials Subjected to Shock Loading

Period of Performance: 09/30/2015 - 09/30/2016

$149K

Phase 1 STTR

Recipient Firm

Simmetrix, Inc.
CLIFTON PARK, NY 12065
Firm POC
Principal Investigator

Research Institution

Rensselaer Polytechnic Institute
110 8th Street
Troy, NY 12180
Institution POC

Abstract

ABSTRACT: The overall objective of this project is to develop scalable simulation components that effectively model the meso-scale physics of heterogeneous energetic materials subject to dynamic shock loading including matrix debonding, void collapse, and damage due to crystal to crystal interactions, and bridges the meso-scale to the macro-scale for system scale simulations of the transition to detonation. Specific technical developments required to accomplish this include: ? Geometry construction and meshing of meso-scale structures with the capability of updating for evolving geometries and mesh adaptivity to handle debonding and fracture. ? Appropriate models of the physical processes including models of material and interface behavior under shock conditions. ? Procedures for accurate, efficient, and scalable thermal-mechanical simulations of the meso-scale behavior built on robust finite element software. ?; BENEFIT: By developing the simulation tool as a set of functional components that interact through well defined interfaces there will be the opportunity to apply them to a wide range problems characterized by evolving meso-scale structures which is at the core of a wide range of material design problems. In addition a number of the components developed will be applicable to other areas of application in which careful tracking of meso-scale structures are important such as biological systems.