Propagation and attenuation of elastic waves in nematic elastomer hollow cylinders

被引：3
作者：
Qiao, Hui [1 ,2 ]
Yu, Jiangong [1 ]
Zhang, Xiaoming [1 ]
Liu, Yanwei [3 ,4 ]
机构：
[1] Henan Polytech Univ, Sch Mech & Power Engn, Jiaozuo 454003, Peoples R China
[2] Henan Polytech Univ, Sch Math & Informat Sci, Jiaozuo 454003, Peoples R China
[3] Henan Polytech Univ, Coll Safety Sci & Engn, Jiaozuo 454003, Peoples R China
[4] Henan Int Joint Lab Coal Mine Safety & Occupat Haz, Jiaozuo 454003, Peoples R China
来源：
EUROPEAN JOURNAL OF MECHANICS A-SOLIDS | 2023年 / 102卷
关键词：
Nematic elastomers; Cylinder; Guided wave; Dispersion; Attenuation; DYNAMICS; SURFACE;
D O I：
10.1016/j.euromechsol.2023.105102
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
As an intelligent soft material, nematic elastomers (NEs) possess both rubber elasticity and the unique properties of liquid crystals. Such combination gives NEs unusual mechanical response. In this paper, guided waves in nematic elastomer hollow cylinders are investigated. Based on the viscoelasticity theory, the wave governing equations are derived and solved by the Legendre polynomial series approach (LPSA). This approach can directly obtain eigenvalues/eigenvectors characterizing wave propagation and attenuation or field profiles. The effects of circumferential order and radius-thickness ratio on dispersion and attenuation curves are discussed. Besides, dispersion and attenuation curves with different initial director orientations are presented. It is found that the existence of the director results in mode conversions between adjacent flexural longitudinal modes and flexural torsional modes. The results provide important guidance for dynamic design and device analysis of cylinder shaped nematic elastomer devices.
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页数：14
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