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Title: Representing ductile damage with the dual domain material point method

Abstract

In this study, we incorporate a ductile damage material model into a computational framework based on the Dual Domain Material Point (DDMP) method. As an example, simulations of a flyer plate experiment involving ductile void growth and material failure are performed. The results are compared with experiments performed on high purity tantalum. We also compare the numerical results obtained from the DDMP method with those obtained from the traditional Material Point Method (MPM). Effects of an overstress model, artificial viscosity, and physical viscosity are investigated. Our results show that a physical bulk viscosity and overstress model are important in this impact and failure problem, while physical shear viscosity and artificial shock viscosity have negligible effects. A simple numerical procedure with guaranteed convergence is introduced to solve for the equilibrium plastic state from the ductile damage model.

Authors:
 [1];  [1];  [1];  [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
OSTI Identifier:
1255952
Alternate Identifier(s):
OSTI ID: 1398148
Report Number(s):
LA-UR-15-24649
Journal ID: ISSN 0045-7825; PII: S0045782515004016
Grant/Contract Number:  
AC52-06NA25396
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Computer Methods in Applied Mechanics and Engineering
Additional Journal Information:
Journal Volume: 300; Journal Issue: C; Journal ID: ISSN 0045-7825
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 97 MATHEMATICS AND COMPUTING; material point method; ductile material failure; particle methods

Citation Formats

Long, C. C., Zhang, D. Z., Bronkhorst, C. A., and Gray, III, G. T. Representing ductile damage with the dual domain material point method. United States: N. p., 2015. Web. doi:10.1016/j.cma.2015.12.006.
Long, C. C., Zhang, D. Z., Bronkhorst, C. A., & Gray, III, G. T. Representing ductile damage with the dual domain material point method. United States. https://doi.org/10.1016/j.cma.2015.12.006
Long, C. C., Zhang, D. Z., Bronkhorst, C. A., and Gray, III, G. T. 2015. "Representing ductile damage with the dual domain material point method". United States. https://doi.org/10.1016/j.cma.2015.12.006. https://www.osti.gov/servlets/purl/1255952.
@article{osti_1255952,
title = {Representing ductile damage with the dual domain material point method},
author = {Long, C. C. and Zhang, D. Z. and Bronkhorst, C. A. and Gray, III, G. T.},
abstractNote = {In this study, we incorporate a ductile damage material model into a computational framework based on the Dual Domain Material Point (DDMP) method. As an example, simulations of a flyer plate experiment involving ductile void growth and material failure are performed. The results are compared with experiments performed on high purity tantalum. We also compare the numerical results obtained from the DDMP method with those obtained from the traditional Material Point Method (MPM). Effects of an overstress model, artificial viscosity, and physical viscosity are investigated. Our results show that a physical bulk viscosity and overstress model are important in this impact and failure problem, while physical shear viscosity and artificial shock viscosity have negligible effects. A simple numerical procedure with guaranteed convergence is introduced to solve for the equilibrium plastic state from the ductile damage model.},
doi = {10.1016/j.cma.2015.12.006},
url = {https://www.osti.gov/biblio/1255952}, journal = {Computer Methods in Applied Mechanics and Engineering},
issn = {0045-7825},
number = C,
volume = 300,
place = {United States},
year = {Mon Dec 14 00:00:00 EST 2015},
month = {Mon Dec 14 00:00:00 EST 2015}
}

Journal Article:

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Cited by: 7 works
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