Modeling compaction-induced energy dissipation of granular HMX

Conference · Thu Dec 31 04:00:00 EST 1998

OSTI ID:350866

Gonthier, K A ^[1]; Menikoff, R; Son, S F; Asay, B W ^[2]

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1. Lamar Univ., Beaumont, TX (US). Dept. of Mechanical Engineering
2. Los Alamos National Lab., NM (US)

A thermodynamically consistent model is developed for the compaction of granular solids. The model is an extension of the single phase limit of two-phase continuum models used to describe Deflagration-to-Detonation Transition (DDT) experiments. The focus is on the energetics and dissipation of the compaction process. Changes in volume fraction are partitioned into reversible and irreversible components. Unlike conventional DDT models, the model is applicable from the quasi-static to dynamic compaction regimes for elastic, plastic, or brittle materials. When applied to the compaction of granular HMX (a brittle material), the model predicts results commensurate with experiments including stress relaxation, hysteresis, and energy dissipation. The model provides a suitable starting point for the development of thermal energy localization sub-scale models based on compaction-induced dissipation.

• Research Organization: Los Alamos National Lab., NM (US)
• Sponsoring Organization: USDOE, Washington, DC (US)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 350866
• Report Number(s): LA-UR--98-3674; CONF-980803--; ON: DE99002816
• Country of Publication: United States
• Language: English

Related Subjects

98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION
ENERGY LOSSES
EXPLOSIONS
HYSTERESIS
STRESS RELAXATION