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Crashworthiness Analysis of Bio-Inspired Multi-Cell Concave Tubes
Xiaolin Deng1, Jinjin Huang2, Jialiang Xie2
1School of Mechanical and Resource Engineering, Wuzhou University, Wuzhou 543002, China.
Biomimetics (Basel, Switzerland)
|February 26, 2026
Summary
This study introduces a novel bio-inspired multi-cell concave tube (BMCT) that significantly enhances energy absorption and crush force efficiency under axial impact, inspired by horse tail grass.
Area of Science:
- Biomimetics and Materials Science
- Mechanical Engineering and Impact Dynamics
Background:
- Traditional energy-absorbing structures often face trade-offs between initial peak force and overall energy absorption.
- There is a need for advanced structural designs that optimize crashworthiness for impact mitigation.
Purpose of the Study:
- To introduce and analyze the crashworthiness of a novel bio-inspired multi-cell concave tube (BMCT).
- To investigate the energy absorption capabilities and crush force efficiency of the BMCT under axial impact.
- To validate simulation results through experimental and theoretical analyses.
Main Methods:
- Biomimicry inspired by horse tail grass plants to design the BMCT structure.
- Finite element analysis (FEA) for simulating axial impact scenarios.
- Experimental testing and theoretical analysis to validate simulation data.
Main Results:
- The BMCT demonstrates enhanced energy absorption capacity at equivalent mass compared to other structures.
- BMCT achieved a 41.04% increase in crush force efficiency (CFE) with a stable initial peak crushing force (IPCF).
- Variations in hierarchical levels of the BMCT resulted in a 21.22% increase in CFE at the same mass.
Conclusions:
- The BMCT offers superior crashworthiness by maintaining a stable initial peak force while improving energy absorption.
- The bio-inspired design provides a promising approach for developing advanced energy-absorbing structures.
- The study validates the reliability of simulation methods for analyzing such complex structures.
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