Modeling energy dissipation induced by quasi-static compaction of granular HMX
Conference
·
OSTI ID:548630
A simple extension of a conventional two-phase (inert gas and reactive solid) continuum model of Deflagration-to-Detonation Transition (DDT) in energetic granular material is given to account for energy dissipation induced by quasi-static compaction. To this end, the conventional model equations,, valid in the limit of negligible gas phase effects, are supplemented by a relaxation equation governing irreversible changes in solid volume fraction due to intergranular friction, plastic deformation of granules, and granule fracture. The proposed model constitutes a non-strictly hyperbolic system of equations, and is consistent with the Second Law of Thermodynamics for a two-phase mixture. The model predicts stress relaxation and substantial dissipation induced by quasi-static compaction; such phenomena are commonly observed in quasi-static compaction experiments for granular HMX. Predicted intergranular stress histories compare well with experimental data.
- Research Organization:
- Los Alamos National Lab., NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 548630
- Report Number(s):
- LA-UR--97-3024; CONF-970707--; ON: DE98000975
- Country of Publication:
- United States
- Language:
- English
Similar Records
Modeling energy dissipation induced by quasi-static compaction of granular HMX
Modeling compaction-induced energy dissipation of granular HMX
The deflagration-to-detonation transition in granular HMX
Journal Article
·
Wed Jul 01 00:00:00 EDT 1998
· AIP Conference Proceedings
·
OSTI ID:295465
Modeling compaction-induced energy dissipation of granular HMX
Conference
·
Wed Dec 30 23:00:00 EST 1998
·
OSTI ID:350866
The deflagration-to-detonation transition in granular HMX
Conference
·
Mon Dec 31 23:00:00 EST 1990
·
OSTI ID:5738865