Abstract
This paper inspired by the macrostructures and microstructures of the lotus leaf, introduces a novel dendritic fractal corrugated tube (DFCT), distinct from conventional fractal multicellular circular tubes(MCT), featuring on outer wall has evolved into a corrugated shapes that resembles 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: When the number of ripples N = 6, ordinal number n = 1, the DFCT maximum specifc energy absorption (SEA) and crush force efciency (CFE) are 21.56% and 14.02% higher than those of a circular multicellular tube, respectively. When N = 12, ordinal number n = 2, the DFCT highest values of SEA and CFE were 22.87% and 8.23% higher than those of the multicellular circular tubes, respectively. 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.