The porous structure in pomelo peel is believed to be responsible for the protection of its fruit from damage during the free falling from a tree.The quantitative understanding of the relationship between the deformation behavior and the porous structure could pave the way for the design of porous structures for efficient energy absorption.Here,a universal feature of pore distribution in pomelo peels along the radial direction is extracted from three varieties of pomelos,which shows strong correlation to the deformation behavior of the peels under compression.Guided by the porous design found in pomelo peels,porous polyether-ether-ketone(PEEK)cube is additively manufactured and possesses the highest ability to absorb energy during compression as compared to the non-pomelo-inspired geometries,which is further confirmed by the finite element simulation.The nature-optimized porous structure revealed here could guide the design of lightweight and high-energy-dissipating materials/devices.

School of Power and Mechanical Engineering,The Institute of Technological Sciences,Wuhan University,South Donghu Road 8,Wuhan 430072,Hubei,China;State Key Laboratory of Automotive Simulation and Control and Key Lab of Bionic Engineering,Ministry of Education,Jilin University,Changchun 130022,China;School of Materials Science and Engineering,Wuhan University of Technology,Wuhan 430070,China;Department of Chemical and Materials Engineering,University of Kentucky,Lexington,KY 40506,USA

[1]Baisong Yang;Wenhui Chen;Renlong Xin;Xiaohong Zhou;Di Tan;Chuan Ding;You Wu;Liang Yin;Chuyang Chen;Shan Wang;Zhenglei Yu;Jonathan T.Pham;Sheng Liu;Yifeng Lei;Longjian Xue-.Pomelo Peel-Inspired 3D-Printed Porous Structure for Efficient Absorption of Compressive Strain Energy)[J].仿生工程学报（英文版）,2022(02):448-457

Pomelo,pomelos

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