期刊
APPLIED PHYSICS LETTERS
卷 105, 期 23, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4903160
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资金
- United States National Science Foundation's Civil, Mechanical, and Manufacturing Innovation Grant [1149750]
- Qatar Foundation's National Priorities Research Program [5-068-2-024]
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1149750] Funding Source: National Science Foundation
Dermal scales, prevalent across biological groups, considerably boost survival by providing multifunctional advantages. Here, we investigate the nonlinear mechanical effects of biomimetic scale like attachments on the behavior of an elastic substrate brought about by the contact interaction of scales in pure bending using qualitative experiments, analytical models, and detailed finite element (FE) analysis. Our results reveal the existence of three distinct kinematic phases of operation spanning linear, nonlinear, and rigid behavior driven by kinematic interactions of scales. The response of the modified elastic beam strongly depends on the size and spatial overlap of rigid scales. The nonlinearity is perceptible even in relatively small strain regime and without invoking material level complexities of either the scales or the substrate. (C) 2014 AIP Publishing LLC.
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