Cookoff Response of PBXN-109: Material Characterization and ALE3D Thermal Predictions
Conference
·
OSTI ID:15005490
Materials properties measurements are made for the RDX-based explosive, PBXN-109, and initial ALE3D model predictions are given for the cookoff temperature in a U.S. Navy test. This work is part of an effort in the U.S. Navy and Department of Energy (DOE) laboratories to understand the thermal explosion behavior of this material. Benchmark cookoff experiments are being performed by the U.S. Navy to validate DOE materials models and computer codes. The ALE3D computer code can model the coupled thermal, mechanical, and chemical behavior of heating, ignition, and explosion in cookoff tests. In our application, a standard three-step step model is selected for the chemical kinetics. The strength behavior of the solid constituents is represented by a Steinberg-Guinan model while polynomial and gamma-law expressions are used for the Equation Of State (EOS) for the solid and gas species, respectively. Materials characterization measurements are given for thermal expansion, heat capacity, shear modulus, bulk modulus, and One-Dimensional-Time-to-Explosion (ODTX). These measurements and those of the other project participants are used to determine parameters in the ALE3D chemical, mechanical, and thermal models. Time-dependent, two-dimensional results are given for the temperature and material expansion. The results show predicted cookoff temperatures slightly higher than the measured values.
- Research Organization:
- Lawrence Livermore National Lab., CA (US)
- Sponsoring Organization:
- US Department of Energy (US)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 15005490
- Report Number(s):
- UCRL-JC-144009
- Country of Publication:
- United States
- Language:
- English
Similar Records
Cookoff Response of PBXN-109: Material Characterization and ALE3D Thermal Predictions
Cookoff response of PBXN-109: material characterization and ALE3D model
ALE3D Model Predictions and Materials Characterization for the Cookoff Response of PBXN-109
Conference
·
Tue Aug 21 00:00:00 EDT 2001
·
OSTI ID:15006853
Cookoff response of PBXN-109: material characterization and ALE3D model
Conference
·
Tue Oct 24 00:00:00 EDT 2000
·
OSTI ID:15003271
ALE3D Model Predictions and Materials Characterization for the Cookoff Response of PBXN-109
Conference
·
Mon Mar 18 23:00:00 EST 2002
·
OSTI ID:15005681