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Title: Simulations of Two Heavily Confined PBX 9502 Cook-off Experiments.

Abstract

Finite element models of two cook-off experiments were constructed using the Aria code.These experiments provided thermocouple measurements that were used as boundary conditions to carry out finite element (FE) simulations and comparisons of the FE thermal response with internal temperature measurements in the PBX 9502. These FE models contain a pressure dependent PBX 9502 thermal decomposition model developed by Hobbs’ et al.. Comparisons of the FE results and the experiments are presented. These comparisons assess the predictive capabilities of Hobbs’ model under the experimental conditions. Limiting cases of the PBX 9502 decomposition model are considered. Two parameterizations associated with the pressure dependency of the PBX 9502 decomposition model were carried out to fit the experiments using internal temperature measurements. Two inverse heat conduction problems were implemented to estimate temperatures as functions of time at locations on the outer surface of the PBX 9502. Thermocouple conduction error studies were carried out to assess the comparisons of the FE model thermal response with the experiments.

Authors:
 [1];  [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1425748
Report Number(s):
LA-UR-18-21834
DOE Contract Number:  
AC52-06NA25396
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE; Cook-off of Explosives Inverse Heat Conduction

Citation Formats

Aviles-Ramos, Cuauhtemoc, Parker, Jr., Gary Robert, and Holmes, Matthew David. Simulations of Two Heavily Confined PBX 9502 Cook-off Experiments.. United States: N. p., 2018. Web. doi:10.2172/1425748.
Aviles-Ramos, Cuauhtemoc, Parker, Jr., Gary Robert, & Holmes, Matthew David. Simulations of Two Heavily Confined PBX 9502 Cook-off Experiments.. United States. doi:10.2172/1425748.
Aviles-Ramos, Cuauhtemoc, Parker, Jr., Gary Robert, and Holmes, Matthew David. Wed . "Simulations of Two Heavily Confined PBX 9502 Cook-off Experiments.". United States. doi:10.2172/1425748. https://www.osti.gov/servlets/purl/1425748.
@article{osti_1425748,
title = {Simulations of Two Heavily Confined PBX 9502 Cook-off Experiments.},
author = {Aviles-Ramos, Cuauhtemoc and Parker, Jr., Gary Robert and Holmes, Matthew David},
abstractNote = {Finite element models of two cook-off experiments were constructed using the Aria code.These experiments provided thermocouple measurements that were used as boundary conditions to carry out finite element (FE) simulations and comparisons of the FE thermal response with internal temperature measurements in the PBX 9502. These FE models contain a pressure dependent PBX 9502 thermal decomposition model developed by Hobbs’ et al.. Comparisons of the FE results and the experiments are presented. These comparisons assess the predictive capabilities of Hobbs’ model under the experimental conditions. Limiting cases of the PBX 9502 decomposition model are considered. Two parameterizations associated with the pressure dependency of the PBX 9502 decomposition model were carried out to fit the experiments using internal temperature measurements. Two inverse heat conduction problems were implemented to estimate temperatures as functions of time at locations on the outer surface of the PBX 9502. Thermocouple conduction error studies were carried out to assess the comparisons of the FE model thermal response with the experiments.},
doi = {10.2172/1425748},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Mar 07 00:00:00 EST 2018},
month = {Wed Mar 07 00:00:00 EST 2018}
}

Technical Report:

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