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Revisiting the effect of aspect ratio on shear band evolution by hydrostatic-stress embedded free-volume theory
Zhao, J. X.; Zhang, Z. F.; Chen, Y. F.; Gong, J. M.
2020-03-01
Source PublicationJOURNAL OF NON-CRYSTALLINE SOLIDS
Volume531
AbstractThe shear band evolution process induced by different aspect ratios was investigated by experiments and hydrostatic-stress embedded free-volume theory. It was found that specimen with lower aspect ratio displayed a higher compressive plasticity since the shear band propagation was confined by the machine head in a way of preventing the sample from fracturing along one major shear band. Hydrostatic-stress embedded free-volume theory was incorporated into ABAQUS as a user material subroutine UMAT. Numerical method was performed to reveal the shear band evolution caused by different aspect ratios. There was a good agreement between experiments and simulations. Furthermore, simulations demonstrated that sample with smaller aspect ratios yielded a relatively lower strain localization level, leading to a correspondingly stable plastic deformation process. Compared with the viscoelastic model, it showed that the current model could better describe shear band evolution history.
DOI10.1016/j.jnoncrysol.2019.119861
WOS IDWOS:000527022700015
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Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/83073
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Zhao, J. X.,Zhang, Z. F.,Chen, Y. F.,et al. Revisiting the effect of aspect ratio on shear band evolution by hydrostatic-stress embedded free-volume theory[J]. JOURNAL OF NON-CRYSTALLINE SOLIDS,2020,531.
APA Zhao, J. X.,Zhang, Z. F.,Chen, Y. F.,&Gong, J. M..(2020).Revisiting the effect of aspect ratio on shear band evolution by hydrostatic-stress embedded free-volume theory.JOURNAL OF NON-CRYSTALLINE SOLIDS,531.
MLA Zhao, J. X.,et al."Revisiting the effect of aspect ratio on shear band evolution by hydrostatic-stress embedded free-volume theory".JOURNAL OF NON-CRYSTALLINE SOLIDS 531(2020).
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