干旱区生态环境知识资源中心(Arid): Time-scale mechanical behaviors of locust semi-lunar process cuticles under power amplification for rapid movements

Arid

DOI	10.1016/j.jbiomech.2020.109742
	Time-scale mechanical behaviors of locust semi-lunar process cuticles under power amplification for rapid movements
	Wan, Chao 1,2; Hao, Zhixiu 3; Gorb, Stanislav N.2
通讯作者	Wan, Chao
来源期刊	JOURNAL OF BIOMECHANICS
ISSN	0021-9290
EISSN	1873-2380
出版年	2020
卷号	104
英文摘要	The semi-lunar process (SLP) is a key component in the power amplification of locusts to achieve rapid movements. Its mechanical properties determine the amount of the power amplification and the subsequent locomotion performance. As previously reported, the SLP cuticle endures physiological dynamic loadings. However, the time-scale mechanical properties of the SLP are still unknown, especially under stress relaxation and cyclic loadings. In this paper, the SLP cuticles of adult desert locusts (Schistocerca gregaria) were studied using stress relaxation and cyclic tests, with loadings corresponding to the physiological loading conditions of the power amplification. The SLP cuticle was found to show pronounced stress relaxation behavior with the resultant force and an evident time shift between the maximal displacement and the maximal resultant force. The number of loading cycles before mechanical failure (life cycle number) increases when the SLP cuticle is cyclically loaded by a lower stress level. Moreover, the failure strength of the SLP at low cycles equals the physiological stress level in the power amplification, implying that the healing of the cuticle might contribute to the successful performance of numerous jumps in the course of the adult locust life. This study not only deepens our understanding of the power amplification mechanism of locust locomotion but also provides valuable knowledge for the design optimization of bioinspired jumping robots and elastic energy storage devices. (C) 2020 Elsevier Ltd. All rights reserved.
英文关键词	Stress relaxation Cyclic loading Cuticle Semi-lunar process Locust Power amplification
类型	Article
语种	英语
国家	Peoples R China ; Germany
收录类别	SCI-E
WOS记录号	WOS:000528331100033
WOS关键词	INSECT ; JUMP ; FATIGUE ; REPAIR
WOS类目	Biophysics ; Engineering, Biomedical
WOS研究方向	Biophysics ; Engineering
来源机构	清华大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319068
作者单位	1.Beijing Inst Technol, Sch Aerosp Engn, Dept Mech, Beijing, Peoples R China; 2.Univ Kiel, Zool Inst, Funct Morphol & Biomech, Kiel, Germany; 3.Tsinghua Univ, State Key Lab Tribol, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wan, Chao,Hao, Zhixiu,Gorb, Stanislav N.. Time-scale mechanical behaviors of locust semi-lunar process cuticles under power amplification for rapid movements[J]. 清华大学,2020,104.
APA	Wan, Chao,Hao, Zhixiu,&Gorb, Stanislav N..(2020).Time-scale mechanical behaviors of locust semi-lunar process cuticles under power amplification for rapid movements.JOURNAL OF BIOMECHANICS,104.
MLA	Wan, Chao,et al."Time-scale mechanical behaviors of locust semi-lunar process cuticles under power amplification for rapid movements".JOURNAL OF BIOMECHANICS 104(2020).