Dynamic excitations in periodic fish scale inspired structures

Omid Bateniparvar; Md Shahjahan Hossain; Ranajay Ghosh

doi:10.1117/12.3012058

9 May 2024 Dynamic excitations in periodic fish scale inspired structures

Omid Bateniparvar, Md Shahjahan Hossain, Ranajay Ghosh

Proceedings Volume 12944, Bioinspiration, Biomimetics, and Bioreplication XIV; 1294404 (2024) https://doi.org/10.1117/12.3012058
Event: SPIE Smart Structures + Nondestructive Evaluation, 2024, Long Beach, California, United States

Abstract

Fish scale-like structures on substrates, arranged periodically, work together to create unique mechanical and optical behaviors. These include nonlinear stiffness, anisotropic deformation, and eventually, locking behavior. Fabrication of scale-like biomimetic examples involves embedding stiffer, plate-like sections into softer substrates. Previously, research has focused on their static qualities. The dynamic response is just as fascinating, showing remarkable interplay between geometry and materials, along with anisotropies. The damping behavior observed here significantly diverges from the conventional damping seen in mechanical frameworks, often modeled as Rayleigh damping. Here we discuss the origin of some of these behaviors that include material-geometry distinction in damping, multiple damping modes and interplay of dissipation possibilities. We have shown a derivation of simple mathematical laws estimating nonlinear spring damper system that govern architecture-dissipation relationships and can help guide design. We conclude by noting the different type of structural damping with other forms of dissipation typically encountered in mechanical behavior.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Omid Bateniparvar, Md Shahjahan Hossain, and Ranajay Ghosh "Dynamic excitations in periodic fish scale inspired structures", Proc. SPIE 12944, Bioinspiration, Biomimetics, and Bioreplication XIV, 1294404 (9 May 2024); https://doi.org/10.1117/12.3012058

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available