Bioinspired golden spiral shapes on crushing protection behaviors of tubular structures

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Xu, J., Sherman, J., Zhang, W., & Waheed, H. (2023). Bioinspired golden spiral shapes on crushing protection behaviors of tubular structures. Advanced Engineering Materials. https://doi.org/doi:10.1002/adem.202300349
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Faculty, Advanced structure design for energy absorption is a long-lasting pursuit due to its fascinating scientific merit in mechanics and important engineering application. Curves, a type of mathematical variation in geometry, are widely adopted in the biological system and biomaterial structures after long-time nature evolution toward optimization and adaption. Inspired by nature, a novel type of tubular structure is designed with golden spiral curvature. With the variations in the hierarchy of the supporting spirals and the number of arms, a maximum of 38.8% increase is demonstrated in performance over an uncurved counterpart structure. The computational modeling reveals that the additional added golden spiral arms within the tube enhance the rigidity and increase the energy dissipation via progress buckling involved by additional materials such that the energy absorption upon crushing is significantly improved. Theoretical models then provide intrinsic underlying mechanics analysis with more intuitive design guidance for such structures. Results develop an efficient yet simple design based on widely accepted tubular structure design for impact protection, enrich the mechanistic understanding of the nonlinear buckling behaviors, and provide applicable design guidance for engineering structures.

Details
Title

Bioinspired golden spiral shapes on crushing protection behaviors of tubular structures

Author(s)

Xu, Jun
Sherman, John
Zhang, Wen
Waheed, Hamza

UNC Charlotte Affiliate Type

Faculty

Extent

1 online resource

Date Created

2023

Genre

articles

Resource Type

text

Abstract

Advanced structure design for energy absorption is a long-lasting pursuit due to its fascinating scientific merit in mechanics and important engineering application. Curves, a type of mathematical variation in geometry, are widely adopted in the biological system and biomaterial structures after long-time nature evolution toward optimization and adaption. Inspired by nature, a novel type of tubular structure is designed with golden spiral curvature. With the variations in the hierarchy of the supporting spirals and the number of arms, a maximum of 38.8% increase is demonstrated in performance over an uncurved counterpart structure. The computational modeling reveals that the additional added golden spiral arms within the tube enhance the rigidity and increase the energy dissipation via progress buckling involved by additional materials such that the energy absorption upon crushing is significantly improved. Theoretical models then provide intrinsic underlying mechanics analysis with more intuitive design guidance for such structures. Results develop an efficient yet simple design based on widely accepted tubular structure design for impact protection, enrich the mechanistic understanding of the nonlinear buckling behaviors, and provide applicable design guidance for engineering structures.

Subjects--Topics

Materials
Engineering design

Is Part Of

Advanced engineering materials

Language

English

Published Version (Please cite this version)

doi:10.1002/adem.202300349

Publisher's Version

https://doi.org/10.1002/adem.202300349

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