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Title: Modeling and Characterization of Recompressed Damaged Materials

Abstract

Ductile metals subjected to shock loading can develop internal damage through nucleation growth and coalescence of voids. The extent of damage can range from a well-defined spall plane induced by light shocks to more widespread damage caused by strong shocks. Because damage materials are often part of a dynamic system, significant additional deformation can occur in extensively damaged materials. To represent material behavior in simulation codes for stockpile stewardship calculations, both the damage and the recompression processes must be modeled accurately. Currently, no experimentally based models of recompression behavior are available for use in numerical simulations. The goals of this project are to (1) perform recompression experiments on samples containing controlled and well-characterized damage, (2) develop a model capturing the recompression behavior and residual strength based on the experimental data and micro-mechanical models, and (3) implement the model in an Advanced Simulation and Computing (ASCI) code (ALE3D). The recompression model, together with failure models based on underlying physical mechanisms, will provide a more accurate representation of material behavior-information that is needed for simulations of explosively loaded materials such as those required by the Stockpile Stewardship Program.

Authors:
; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab., CA (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
15004870
Report Number(s):
UCRL-ID-150287
TRN: US200321%%373
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 16 Dec 2002
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COALESCENCE; DEFORMATION; NUCLEATION; SIMULATION; STOCKPILES

Citation Formats

Becker, R, Belak, J, and Campbell, G. Modeling and Characterization of Recompressed Damaged Materials. United States: N. p., 2002. Web. doi:10.2172/15004870.
Becker, R, Belak, J, & Campbell, G. Modeling and Characterization of Recompressed Damaged Materials. United States. https://doi.org/10.2172/15004870
Becker, R, Belak, J, and Campbell, G. 2002. "Modeling and Characterization of Recompressed Damaged Materials". United States. https://doi.org/10.2172/15004870. https://www.osti.gov/servlets/purl/15004870.
@article{osti_15004870,
title = {Modeling and Characterization of Recompressed Damaged Materials},
author = {Becker, R and Belak, J and Campbell, G},
abstractNote = {Ductile metals subjected to shock loading can develop internal damage through nucleation growth and coalescence of voids. The extent of damage can range from a well-defined spall plane induced by light shocks to more widespread damage caused by strong shocks. Because damage materials are often part of a dynamic system, significant additional deformation can occur in extensively damaged materials. To represent material behavior in simulation codes for stockpile stewardship calculations, both the damage and the recompression processes must be modeled accurately. Currently, no experimentally based models of recompression behavior are available for use in numerical simulations. The goals of this project are to (1) perform recompression experiments on samples containing controlled and well-characterized damage, (2) develop a model capturing the recompression behavior and residual strength based on the experimental data and micro-mechanical models, and (3) implement the model in an Advanced Simulation and Computing (ASCI) code (ALE3D). The recompression model, together with failure models based on underlying physical mechanisms, will provide a more accurate representation of material behavior-information that is needed for simulations of explosively loaded materials such as those required by the Stockpile Stewardship Program.},
doi = {10.2172/15004870},
url = {https://www.osti.gov/biblio/15004870}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2002},
month = {12}
}