四韧带手性夹芯结构的振动带隙特性研究  

Vibration band gap characterization of four-ligament chiral sandwich structures

作　　者：张锦光[1,2] 陈睿 窦玉宽 鲁季坤 文湘隆[1] ZHANG Jinguang;CHEN Rui;DOU Yukuan;LU Jikun;WEN Xianglong(School of Mechanical and Electronic Engineering,Wuhan University of Technology,Wuhan 430070,China;Institute of Advanced Material and Manufacturing Technology,Wuhan University of Technology,Wuhan 430070,China)

机构地区：[1]武汉理工大学机电工程学院,武汉430070 [2]武汉理工大学先进材料制造装备与技术研究院,武汉430070

出　　处：《复合材料科学与工程》2024年第12期54-61,共8页Composites Science and Engineering

摘　　要：本文为了衰减弹性波,提出了一种以四韧带手性结构为夹芯,碳纤维复合材料为面板的新型夹芯结构。首先,基于Bloch定理和COMSOL有限元软件,求解了四韧带手性结构的振动带隙;其次,分析了原胞节点填充材料以及几何参数对手性结构振动带隙的影响;再次,在频域上研究了四韧带手性夹芯结构内波的传输特性;最后,进行了四韧带手性夹芯结构振动传递衰减特性试验。研究表明:手性结构节点填充材料可以产生低频带隙;几何参数对带隙有很大的影响,通过调整几何参数可以使带隙处于低频区域;当振动频率处在带隙范围内时,手性结构具有良好的衰减特性。这些研究结果将对四韧带手性夹芯结构在工程中的应用起指导作用。In this paper,to attenuate the elastic wave,a new type of sandwich structure with a four-ligament chiral structure as the core and carbon fiber composite material as the panel is proposed.Firstly,based on Bloch’s theorem and COMSOL finite element software,the vibration bandgap of the four-ligament chiral structure is solved;secondly,the influence of the filling materials of the nodes of the protocell and the geometrical parameters on the vibration bandgap of the chiral structure are analyzed;thirdly,the transmission characteristics of the waves within the four-ligament chiral sandwich structure are investigated in the frequency domain;and lastly,the experiments on the vibration transmission and attenuation characteristics of the four-ligament chiral sandwich structure are carried out.The study shows that:the chiral structure node filling material can produce a low-frequency bandgap,and the geometric parameters have a great influence on the bandgap,by adjusting the geometric parameters,the bandgap can be made to be in the low-frequency region;when the vibration frequency is in the range of the bandgap,the chiral structure has a good attenuation characteristic.These findings will guide the application of four-ligament chiral sandwich structures in engineering.

关 键 词：四韧带手性结构 碳纤维复合材料 夹芯结构 振动带隙 几何参数 

分 类 号：TB332[一般工业技术—材料科学与工程]