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Title: Spallation modeling in tantalum

Abstract

A gas gun plate impact spallation experiment has been performed on commercial purity rolled tantalum. The shock pressure achieved was about 7 Gpa and was sufficient to induce incipient spallation. The particle velocity was measured at the free surface of the spalled plate, and the spalled sample was recovered and examined metallographically using image analysis. The quantitative image analysis results are being used to develop a damage model. The model is micromechanically based and involves novel void growth and coalescence processes. The 1D characteristics code CHARADE has been used in a preliminary simulation of the VISAR free surface particle velocity record. Implications for ductile damage modeling will be discussed.

Authors:
; ; ;
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States); Department of Defense, Washington, DC (United States)
OSTI Identifier:
658330
Report Number(s):
LA-UR-97-3782; CONF-9709108-
ON: DE98001541; TRN: AHC2DT06%%214
DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Conference
Resource Relation:
Conference: International workshop on new models and numerical codes for shock wave processes in condensed media, Oxford (United Kingdom), 15-19 Sep 1997; Other Information: PBD: Sep 1997
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 45 MILITARY TECHNOLOGY, WEAPONRY, AND NATIONAL DEFENSE; IMPACT TESTS; TANTALUM; IMPACT SHOCK; MATHEMATICAL MODELS; IMPACT STRENGTH; FRACTURE MECHANICS; DAMAGE

Citation Formats

Tonks, D L, Hixson, R, Zurek, A K, and Thissell, W. Spallation modeling in tantalum. United States: N. p., 1997. Web.
Tonks, D L, Hixson, R, Zurek, A K, & Thissell, W. Spallation modeling in tantalum. United States.
Tonks, D L, Hixson, R, Zurek, A K, and Thissell, W. 1997. "Spallation modeling in tantalum". United States. https://www.osti.gov/servlets/purl/658330.
@article{osti_658330,
title = {Spallation modeling in tantalum},
author = {Tonks, D L and Hixson, R and Zurek, A K and Thissell, W},
abstractNote = {A gas gun plate impact spallation experiment has been performed on commercial purity rolled tantalum. The shock pressure achieved was about 7 Gpa and was sufficient to induce incipient spallation. The particle velocity was measured at the free surface of the spalled plate, and the spalled sample was recovered and examined metallographically using image analysis. The quantitative image analysis results are being used to develop a damage model. The model is micromechanically based and involves novel void growth and coalescence processes. The 1D characteristics code CHARADE has been used in a preliminary simulation of the VISAR free surface particle velocity record. Implications for ductile damage modeling will be discussed.},
doi = {},
url = {https://www.osti.gov/biblio/658330}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1997},
month = {9}
}

Conference:
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