Bulk metallic glass cantilever beams: Outstanding at large-deflection deformation and their application in complaint mechanisms

doi:10.1016/j.jallcom.2022.164335

IMR OpenIR

	Bulk metallic glass cantilever beams: Outstanding at large-deflection deformation and their application in complaint mechanisms
	Li, Diao-Feng; Bai, Chun-Guang; Zhang, Zhi-Qiang
通讯作者	Bai, Chun-Guang(cgbai@imr.ac.cn)
	2022-06-15
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	906 页码:9
摘要	Excellent combination of mechanical properties of bulk metallic glasses (BMGs) are a class of relatively young and promising candidate materials for compliant mechanisms (CMs), which are usually associated with the nonlinear large-deflection deformation. In this study, an effective design strategy was proposed to enhance the flexibility of BMG cantilever beam quantitatively, which by means of increasing the ratio of loading distance to beam thickness. Moreover, the accuracy of modulus of elasticity in bending, Eb, which measured by cantilever bending test was affected seriously by the support compliance of the fixed end, and the accurate Eb value of BMG beam can be attained after eliminating this influencing factor. The critical boundary condition of cantilever beams within the scope of small-deflection deformation was identified, which situates at non-dimensional deflection parameter, delta(y)/L, is 0.2. Correspondingly, the critical loading distance-to-thickness ratios, (L/t)(c), of cantilever beams within small-deflection deformation were derived for BMGs and conventional crystalline metals, which provide a criterion to predict the potential to achieving large-deflection deformation. It is noticed that by plotting the flexural stress-delta(y)/L relations for BMG and several conventional crystalline metals used in CMs, the unique advantages of BMG cantilever beam in the aspect of achieving large-deflection deformation and enduring higher flexural stress can be reflected more intuitively. These advantages of BMG cantilever beam are well suitable for CMs which designed to have a small footprint and requirement of large-deflection motions, such as in the fields of microelectromechanical systems (MEMS) and biomedicines. (C)& nbsp;2022 Elsevier B.V. All rights reserved.
关键词	Metallic glasses Compliant mechanisms Cantilever beam & nbsp Modulus of elasticity in bending Large deflection deformation
资助者	National Key Research and Development Program of China
DOI	10.1016/j.jallcom.2022.164335
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2017YFB0306201]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000779684200004
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/172789
专题	中国科学院金属研究所
通讯作者	Bai, Chun-Guang
作者单位	Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Li, Diao-Feng,Bai, Chun-Guang,Zhang, Zhi-Qiang. Bulk metallic glass cantilever beams: Outstanding at large-deflection deformation and their application in complaint mechanisms[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2022,906:9.
APA	Li, Diao-Feng,Bai, Chun-Guang,&Zhang, Zhi-Qiang.(2022).Bulk metallic glass cantilever beams: Outstanding at large-deflection deformation and their application in complaint mechanisms.JOURNAL OF ALLOYS AND COMPOUNDS,906,9.
MLA	Li, Diao-Feng,et al."Bulk metallic glass cantilever beams: Outstanding at large-deflection deformation and their application in complaint mechanisms".JOURNAL OF ALLOYS AND COMPOUNDS 906(2022):9.