2D and 3D Multiscale/Multicomponent Modeling of Impact Response of Heterogeneous Energetic Composites
Abstract
The objective of this project as modified and approved by DTRA is to develop a new scientific framework and technical capability for the computational analyses and design of the thermal mechanical behavior of energetic composite materials under dynamic impact loading. The model material system polymer bonded explosives (PBX). The capability to be developed goes beyond what is available at the present. Due to the reduced level of funding available relative to the level in the original proposal, we have made certain changes in the scope of the work. The characteristics of the framework and capability include (1) focus on our state-of-the-art 2D CFEM computational framework, (2) account of fully dynamic finite deformation kinetics and kinematics, (3) tracking of microstructural level fracture, failure, shear banding, contact and frictional heating, (4) account for the coupling between mechanical deformation and thermal generation and conduction, (5) account for the initiation of energetic reactions in dynamically deforming heterogeneous materials, (6) characterization of the stochastic variations in ignition behavior, and (7) three-dimensional (3D) modeling will primarily focus on the effect of anisotropic crystalline plastic response (slip) on the dissipation mechanisms in HMX granule aggregates.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 01, 2016
- Accession Number
- AD1011293
Entities
People
- Min Zhou
- Seokpum Kim
- Yaochi Wei