基于Skewed Miura构型的周期可展结构变带隙分析研究  

Bandgap mechanism analysis of periodic deployable structure based on Skewed Miura pattern

作　　者：郭书瑜 喻莹 彭肖桐 GUO Shu-yu;YU Ying;PENG Xiao-tong(Department of Civil Engineering,Shantou University,Shantou 515063,China)

机构地区：[1]汕头大学土木与环境工程系,广东汕头515063

出　　处：《空间结构》2023年第4期57-64,79,共9页Spatial Structures

基　　金：国家自然科学基金项目(52238001);广东省科技计划项目(STKJ2021190)。

摘　　要：基于折纸构型的周期结构在一定条件下具有带隙特性,能阻止特定频率的弹性波在结构中传播,这种带隙特征可以调节,为减振结构的开发提供了新思路.对基于Skewed Miura折纸构型的周期性可展结构变带隙机理进行研究.推导了Skewed Miura折纸构型的几何关系,并利用布洛赫波分析框架研究了该构型的带隙情况.将Skewed Miura单元的几何形状和折纸构型的折叠状态作为设计变量,找出该构型的最大带隙值和相应的折展状态.对比发现,Skewed Miura构型带隙的数量及大小明显大于Miura构型,且带隙位置所处频率范围较低.本研究为减振结构的开发提供了新的结构形式.The periodic structure based on origami configuration has bandgap characteristics under certain conditions,which can prevent the elastic wave propagating at a specific frequency in the structure.This bandgap characteristics can be adjusted,which provides a new idea for the development of vibration absorption structure.In this work,the bandgap mechanism of periodic deployable structures based on Skewed Miura pattern is analyzed.The geometric relation of Skewed Miura origami pattern is derived,and the bandgap of this pattern is then analyzed by utilizing Bloch wave framework.The geometry of the unit cell and the folded state of the structure are selected as design variables,and the maximum bandgap of the Skewed Miura pattern and the corresponding folded state are found.It is shown that the number and size of bandgaps in Skewed Miura pattern are larger than those in Miura pattern and occur at relatively lower frequencies.This work provides a new structure form for the development of vibration absorption structure.

关 键 词：Skewed Miura折纸构型 周期性可展结构 变带隙机理 

分 类 号：TU35[建筑科学—结构工程]