skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Validation of Air-Backed Underwater Explosion Experiments with ALE3D

Abstract

This paper summarizes an exercise carried out to validate the process of implementing LLNL's ALE3D to predict the permanent deformation and rupture of an air-backed steel plate subjected to underwater shock. Experiments were performed in a shock tank at the Naval Science and Technology Laboratory in Visakhapatnam India, and the results are documented in reference. A consistent set of air-backed plates is subjected to shocks from increasing weights of explosives ranging from 10g-80g. At 40g and above, rupture is recorded in the experiment and, without fracture mechanics implemented in ALE3D, only the cases of 10g, 20g, and 30g are presented here. This methodology applies the Jones-Wilkins-Lee (JWL) Equation of State (EOS) to predict the pressure of the expanding detonation products, the Gruneisein EOS for water under highly dynamic compressible flow - both on 1-point integrated 3-d continuum elements. The steel plates apply a bilinear elastic-plastic response with failure and are simulated with 3-point integrated shell elements. The failure for this exercise is based on effective (or equivalent) plastic strain.

Authors:
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
917915
Report Number(s):
UCRL-TR-211363
TRN: US200817%%1023
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 36 MATERIALS SCIENCE; COMPRESSIBLE FLOW; DEFORMATION; FRACTURE MECHANICS; PLASTICS; PLATES; RUPTURES; STEELS; TANKS; UNDERWATER EXPLOSIONS; VALIDATION; WATER

Citation Formats

Leininger, L D. Validation of Air-Backed Underwater Explosion Experiments with ALE3D. United States: N. p., 2005. Web. doi:10.2172/917915.
Leininger, L D. Validation of Air-Backed Underwater Explosion Experiments with ALE3D. United States. https://doi.org/10.2172/917915
Leininger, L D. 2005. "Validation of Air-Backed Underwater Explosion Experiments with ALE3D". United States. https://doi.org/10.2172/917915. https://www.osti.gov/servlets/purl/917915.
@article{osti_917915,
title = {Validation of Air-Backed Underwater Explosion Experiments with ALE3D},
author = {Leininger, L D},
abstractNote = {This paper summarizes an exercise carried out to validate the process of implementing LLNL's ALE3D to predict the permanent deformation and rupture of an air-backed steel plate subjected to underwater shock. Experiments were performed in a shock tank at the Naval Science and Technology Laboratory in Visakhapatnam India, and the results are documented in reference. A consistent set of air-backed plates is subjected to shocks from increasing weights of explosives ranging from 10g-80g. At 40g and above, rupture is recorded in the experiment and, without fracture mechanics implemented in ALE3D, only the cases of 10g, 20g, and 30g are presented here. This methodology applies the Jones-Wilkins-Lee (JWL) Equation of State (EOS) to predict the pressure of the expanding detonation products, the Gruneisein EOS for water under highly dynamic compressible flow - both on 1-point integrated 3-d continuum elements. The steel plates apply a bilinear elastic-plastic response with failure and are simulated with 3-point integrated shell elements. The failure for this exercise is based on effective (or equivalent) plastic strain.},
doi = {10.2172/917915},
url = {https://www.osti.gov/biblio/917915}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Feb 04 00:00:00 EST 2005},
month = {Fri Feb 04 00:00:00 EST 2005}
}