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Title: Engineering Analysis of the DARHT 3685 6-ft Confinement Vessel

Abstract

An engineering analysis of the DARHT 3685 confinement vessel was performed using the Lagrangian finite element code, ABAQUS, and the shock physics code CTH. The ABAQUS analysis indicates that, for a non-uniform applied pressure loading with peak pressures approaching 300 000 psi near the top and bottom centerline of the vessel1, several of the bolts connecting the top cover to the top nozzle will plastically deform, possibly leading to progressive failure of the remaining bolts. A pure Eulerian analysis indicates that the minimum fragment energy for rupture of the 2.5- inch wall is approximately 50 kJ. Lastly, recommendations for use of combined Eulerian and Lagrangian techniques are discussed which might enhance future vessel analysis activities.

Authors:
 [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:
1438127
Report Number(s):
LA-UR-18-23906
DOE Contract Number:  
AC52-06NA25396
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English

Citation Formats

Rojas, Stephen P. Engineering Analysis of the DARHT 3685 6-ft Confinement Vessel. United States: N. p., 2018. Web. doi:10.2172/1438127.
Rojas, Stephen P. Engineering Analysis of the DARHT 3685 6-ft Confinement Vessel. United States. doi:10.2172/1438127.
Rojas, Stephen P. Mon . "Engineering Analysis of the DARHT 3685 6-ft Confinement Vessel". United States. doi:10.2172/1438127. https://www.osti.gov/servlets/purl/1438127.
@article{osti_1438127,
title = {Engineering Analysis of the DARHT 3685 6-ft Confinement Vessel},
author = {Rojas, Stephen P.},
abstractNote = {An engineering analysis of the DARHT 3685 confinement vessel was performed using the Lagrangian finite element code, ABAQUS, and the shock physics code CTH. The ABAQUS analysis indicates that, for a non-uniform applied pressure loading with peak pressures approaching 300 000 psi near the top and bottom centerline of the vessel1, several of the bolts connecting the top cover to the top nozzle will plastically deform, possibly leading to progressive failure of the remaining bolts. A pure Eulerian analysis indicates that the minimum fragment energy for rupture of the 2.5- inch wall is approximately 50 kJ. Lastly, recommendations for use of combined Eulerian and Lagrangian techniques are discussed which might enhance future vessel analysis activities.},
doi = {10.2172/1438127},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2018},
month = {5}
}

Technical Report:

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