Investigation of Quasi-Static and Dynamic Mechanical Properties of Bio-Inspired Thin-Walled Structures under Axial Crushing

Zhanhong Guo; Na Han; Meng Zou; Yansong Liu; Jing Liu

Investigation of Quasi-Static and Dynamic Mechanical Properties of Bio-Inspired Thin-Walled Structures under Axial Crushing

Authors

Zhanhong Guo Key Laboratory for Bionics Engineering of Education Ministry, Jilin University https://orcid.org/0000-0002-6670-3572
Na Han Key Laboratory for Bionics Engineering of Education Ministry, Jilin University https://orcid.org/0009-0002-6315-1220
Meng Zou Key Laboratory for Bionics Engineering of Education Ministry, Jilin University https://orcid.org/0000-0003-0498-4791
Yansong Liu Key Laboratory for Bionics Engineering of Education Ministry, Jilin University https://orcid.org/0000-0003-1858-5468
Jing Liu College of Fashion and Textiles, Tarim University https://orcid.org/0009-0007-4705-5454

Abstract

This study proposes a bio-inspired thin-walled energy-absorbing structure with self-similar configurations mimicking conch shells. Through quasi-static compression and drop hammer impact tests, the energy absorption characteristics were comparatively analyzed between the bio-inspired and conventional thin-walled tubes. The results demonstrate that under quasi-static compression, the bio-inspired tubes exhibit stable progressive buckling deformation, with a 21.39% increase in mean crush force (MCF) and a 12.95% improvement in crush force efficiency (CFE). During dynamic impact conditions, the bio-inspired structures show significantly reduced peak load while achieving enhanced specific energy absorption (SEA) and mean crush force (MCF), along with a 24.61% increase in crush force efficiency (CFE) and reduced undulation of load-carrying capacity (ULC). These findings offer novel perspectives for the development of innovative passive safety devices.

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Published

2025-05-13

Issue

Vol. 22 No. 6 (2025)

Section

Original Article

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