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<p>This paper, inspired by the macro-structures and micro-structures of the lotus leaf, introduces a novel&#xa0;dendritic fractal corrugated tube (DFCT), distinct from&#xa0;conventional fractal multicellular circular tube (MCT) ,&#xa0;featuring an outer wall that has evolved into a corrugated shape resembling the contour of a lotus leaf. A comprehensive investigation into&#xa0;the energy absorption characteristics of this&#xa0;corrugated tube under axial impact is conducted through&#xa0;numerical simulation. A parametric study of the structure shows that the specific&#xa0;energy&#xa0;absorption (SEA) and crush force efficiency (CFE) of D-A1W6O1 were 21.56 and 14.02% higher than those of MCT-O1. D-A1W12O2 had SEA and CFE that were 22.87 and 8.23% higher than those of MCT-O2. Subsequently, the deformation model diagram of the structure is analyzed and obtained. This study provides a new idea for developing new thin-walled tube as well as designing more effective energy absorption structures.</p>

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Crashworthiness Analysis of New Dendritic Fractal Corrugated Tube under Axial Impacts

  • 期刊论文

  • 发表日期：

    2025年12月22日

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  • Zhaoping Xie,
  • Xiaolin Deng,
  • Zhenzhen Cai,
  • Yuwen Chen

摘要

This paper, inspired by the macro-structures and micro-structures of the lotus leaf, introduces a novel dendritic fractal corrugated tube (DFCT), distinct from conventional fractal multicellular circular tube (MCT) , featuring an outer wall that has evolved into a corrugated shape resembling the contour of a lotus leaf. A comprehensive investigation into the energy absorption characteristics of this corrugated tube under axial impact is conducted through numerical simulation. A parametric study of the structure shows that the specific energy absorption (SEA) and crush force efficiency (CFE) of D-A1W6O1 were 21.56 and 14.02% higher than those of MCT-O1. D-A1W12O2 had SEA and CFE that were 22.87 and 8.23% higher than those of MCT-O2. Subsequently, the deformation model diagram of the structure is analyzed and obtained. This study provides a new idea for developing new thin-walled tube as well as designing more effective energy absorption structures.