Foldcore Structures with Origami Initiators for Energy-Absorbing Sandwich Panels  

作　　者：Jun Cheng Yang Li 

机构地区：[1]The Institute of Technological Sciences,Wuhan University,Wuhan 430072,China [2]Wuhan University Shenzhen Research Institute,Shenzhen 518057,China

出　　处：《Acta Mechanica Solida Sinica》2023年第4期491-505,共15页固体力学学报（英文版）

基　　金：funded by the National Natural Science Foundation of China(Grant No.12202320);the Guangdong Basic and Applied Basic Research Foundation(Grant No.2021A1515110589).

摘　　要：Origami foldcore structures can be used in thin-walled sandwich panels to provide unique advantages over traditional honey-comb structures.For instance,their continuously connected space is available for flowing through cooling liquid or compact pipeline placement.However,origami foldcores suffer from relatively low-energy absorption.This paper proposes a new design of energy-absorbing foldcore structures for sandwich panels,including the geometric design,experimental tests,numerical parametric study,and theoretical estimation of energy absorption.Origami initiators are introduced to the Miura foldcores to induce a failure mode with more transverse folds,which is not common for regular foldcore structures.As a result,60%higher energy absorption and tunable load uniformity can be achieved.

关 键 词：Thin-walled structures Sandwich panels Energy absorption ORIGAMI Foldcores 

分 类 号：O63[理学—高分子化学]