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

doi:10.1016/j.jallcom.2022.164335

CORC > 金属研究所 > 中国科学院金属研究所

	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
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2022-06-15
卷号	906 页码:9
关键词	Metallic glasses Compliant mechanisms Cantilever beam & nbsp Modulus of elasticity in bending Large deflection deformation
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2022.164335
通讯作者	Bai, Chun-Guang(cgbai@imr.ac.cn)
英文摘要	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.
资助项目	National Key Research and Development Program of China[2017YFB0306201]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000779684200004
资助机构	National Key Research and Development Program of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/172788]
专题	金属研究所_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.