Conch-shell-imitating round tube improved impact-resistant energy-absorbing structure and application
By using a spiral sweeping design inspired by a conch shell-shaped circular tube and constructing a spiral gradient support system with trapezoidal ribs, the problems of high initial peak crushing force and low energy absorption efficiency of traditional circular tubes under axial compression are solved. This achieves a balance between low initial peak force and high energy absorption, thereby improving the overall impact resistance of the circular tube.
Patent Information
- Application Number
- CN202610315410.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-03-16
- Publication Date
- 2026-05-08
AI Technical Summary
Traditional thin-walled circular tubes have high initial peak crushing force, low energy absorption efficiency, and unstable deformation modes under axial compression, making it difficult to achieve a combination of low initial peak force and high energy absorption.
The wall structure is formed by a spiral sweeping design of a conch shell-like cylindrical tube, and four intersecting trapezoidal ribs are set inside to construct a spiral gradual support system. This allows the cylindrical tube to achieve inelastic buckling deformation in the zero stiffness zone under axial compression, and the crushing force increases approximately linearly with displacement.
Without increasing mass or manufacturing complexity, the circular tube energy-absorbing element achieves a balance between low initial peak crushing force and high energy absorption performance, improving energy absorption efficiency and stabilizing deformation modes.