Tailorable Twisting of Biomimetic Scale-Covered Substrate

In this letter, we investigate the geometrically tailorable elasticity in the twisting behavior of biomimetic scale-covered slender soft substrate. Motivated by our qualitative experiments showing a significant torsional rigidity increase, we develop an analytical model and carry out extensive finit...

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Bibliographic Details
Published inarXiv.org
Main Authors Ebrahimi, Hossein, Hessein Ali, Horton, Ryan Alexander, Galvez, Jonathan, Gordon, Ali, Ghosh, Ranajay
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 29.10.2018
Subjects
Biomimetics
Computer simulation
Deformation
Elasticity
Finite element method
Kinematics
Mathematical models
Mechanical analysis
Metamaterials
Nonlinear response
Physics - Soft Condensed Matter
Qualitative analysis
Substrates
Twisting
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Summary:In this letter, we investigate the geometrically tailorable elasticity in the twisting behavior of biomimetic scale-covered slender soft substrate. Motivated by our qualitative experiments showing a significant torsional rigidity increase, we develop an analytical model and carry out extensive finite element (FE) simulations to validate our model. We discover a regime differentiated and reversible mechanical response straddling linear, nonlinear, and rigid behavior. The response is highly tailorable through the geometric arrangement and orientation of the scales. The work outlines analytical relationships between geometry, deformation modes and kinematics, which can be used for designing biomimetic scale-covered metamaterials.
ISSN:2331-8422
DOI:10.48550/arxiv.1809.01188