Modeling and simulation framework for dynamic strain localization in elasto-viscoplastic metallic materials subject to large deformations
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- 作者：H.M. Mourada ; hmourad@lanl.gov" class="auth_mail" title="E-mail the corresponding author ; C.A. Bronkhorsta ; V. Livescub ; J.N. Plohra ; E.K. Cerretab
- 关键词：Adiabatic shear bands ; B. Elastic-viscoplastic material ; B. Finite strain ; C. Finite elements
- 刊名：International Journal of Plasticity
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：88
- 期：Complete
- 页码：1-26
- 全文大小：4856 K
文摘
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We present a computational treatment of shear banding in elasto–viscoplastic metals.
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The proposed framework uses enhanced-strain finite element methods for regularization.
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The MTS model is used to represent the material's temperature and rate sensitivity.
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Results show that thermal softening may be insufficient to induce shear localization.
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In stainless steel, dynamic recrystallization provides the required extra softening.