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Title: Massively Parallel Computations of Damage to a Thin-Walled Structure from Blast.

Abstract

Abstract not provided.

Authors:
;
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1147831
Report Number(s):
SAND2007-3398C
523092
DOE Contract Number:
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: Proposed for presentation at the 2007 ASME International Mechanical Engineering Congress and Exposition held November 11-15, 2007 in Seattle, WA.
Country of Publication:
United States
Language:
English

Citation Formats

Luketa, Anay, and Attaway, Stephen W. Massively Parallel Computations of Damage to a Thin-Walled Structure from Blast.. United States: N. p., 2007. Web.
Luketa, Anay, & Attaway, Stephen W. Massively Parallel Computations of Damage to a Thin-Walled Structure from Blast.. United States.
Luketa, Anay, and Attaway, Stephen W. Tue . "Massively Parallel Computations of Damage to a Thin-Walled Structure from Blast.". United States. doi:. https://www.osti.gov/servlets/purl/1147831.
@article{osti_1147831,
title = {Massively Parallel Computations of Damage to a Thin-Walled Structure from Blast.},
author = {Luketa, Anay and Attaway, Stephen W.},
abstractNote = {Abstract not provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 01 00:00:00 EDT 2007},
month = {Tue May 01 00:00:00 EDT 2007}
}

Conference:
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  • Abstract not provided.
  • Abstract not provided.
  • Predicting failure of thin-walled structures from explosive loading is a very complex task. The problem can be divided into two parts; the detonation of the explosive to produce the loading on the structure, and secondly the structural response. First, the factors that affect the explosive loading include: size, shape, stand-off, confinement, and chemistry of the explosive. The goal of the first part of the analysis is predicting the pressure on the structure based on these factors. The hydrodynamic code CTH is used to conduct these calculations. Secondly, the response of a structure from the explosive loading is predicted using amore » detailed finite element model within the explicit analysis code Presto. Material response, to failure, must be established in the analysis to model the failure of this class of structures; validation of this behavior is also required to allow these analyses to be predictive for their intended use. The presentation will detail the validation tests used to support this program. Validation tests using explosively loaded aluminum thin flat plates were used to study all the aspects mentioned above. Experimental measurements of the pressures generated by the explosive and the resulting plate deformations provided data for comparison against analytical predictions. These included pressure-time histories and digital image correlation of the full field plate deflections. The issues studied in the structural analysis were mesh sensitivity, strain based failure metrics, and the coupling methodologies between the blast and structural models. These models have been successfully validated using these tests, thereby increasing confidence of the results obtained in the prediction of failure thresholds of complex structures, including aircraft.« less