Generalized Mohr-Coulomb strain criterion for bulk metallic glasses under complex compressive loading

doi:10.1038/s41598-019-49085-1

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	Generalized Mohr-Coulomb strain criterion for bulk metallic glasses under complex compressive loading
	Yu L(喻立); Wang ZQ(王自强)
刊名	SCIENTIFIC REPORTS
	2019-08-29
卷号	9 页码:9
ISSN号	2045-2322
DOI	10.1038/s41598-019-49085-1
通讯作者	Wang, Tzu-Chiang(tcwang@imech.ac.cn)
英文摘要	The Mohr-Coulomb (M-C) stress criterion is widely applied to describe the pressure sensitivity of bulk metallic glasses (BMGs). However, this criterion is incapable of predicting the variation in fracture angles under different loading modes. Moreover, the M-C criterion cannot describe the plastic fracture of BMGs under compressive loading because the nominal stress of most BMGs remains unchanged after the materials yield. Based on these limitations, we propose a new generalized M-C strain criterion and apply it to analyze the fracture behaviors of two typical Zr-based BMG round bar specimens under complex compressive loading. In this case, the predicted initial yielding stress is in good agreement with the experimental results. The theoretical results can also describe the critical shear strain and fracture angle of BMGs that are associated with the deformation mode.
分类号	二类/Q1
资助项目	National Natural Science Foundation of China[11702295] ; National Natural Science Foundation of China[11790292] ; National Natural Science Foundation of China[11602272] ; National Natural Science Foundation of China[11602270] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040503]
WOS关键词	YIELD CRITERION ; PLASTICITY ; DEFORMATION ; PRESSURE ; BEHAVIOR ; FRACTURE ; LOCALIZATION ; ENHANCEMENT ; FLOW
WOS研究方向	Science & Technology - Other Topics
语种	英语
WOS记录号	WOS:000483017100033
资助机构	National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
其他责任者	Wang, Tzu-Chiang
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/79955]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Yu L,Wang ZQ. Generalized Mohr-Coulomb strain criterion for bulk metallic glasses under complex compressive loading[J]. SCIENTIFIC REPORTS,2019,9:9.
APA	喻立,&王自强.(2019).Generalized Mohr-Coulomb strain criterion for bulk metallic glasses under complex compressive loading.SCIENTIFIC REPORTS,9,9.
MLA	喻立,et al."Generalized Mohr-Coulomb strain criterion for bulk metallic glasses under complex compressive loading".SCIENTIFIC REPORTS 9(2019):9.