Thermoelastic damping analysis model of transversely isotropic micro/nano-resonators based on dual-phase-lag heat conduction model and surface effect

doi:10.1016/j.compstruct.2022.115664

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	Thermoelastic damping analysis model of transversely isotropic micro/nano-resonators based on dual-phase-lag heat conduction model and surface effect
	Shi, Shuanhu 2,3,4; Jin, Feng 2; He, Tianhu 1; Shi, Guangtian 3,4
刊名	Composite Structures
	2022-07-15
卷号	292
关键词	Damping Heat conduction Q factor measurement Resonators Micro/nano Micro/nano-beam Micro/nano-resonator Nano beams Nanoresonators Non-Fourier heat conduction Surface effect Thermoelastic damping Transversely isotropic materials
ISSN号	0263-8223
DOI	10.1016/j.compstruct.2022.115664
英文摘要	Thermoelastic damping (TED) is one of the key factors for lowering the quality factor (Q-factor) of micro/nano-resonators. However, due to a complex small-scale effect and governing equations of non-homogeneous isotropic materials, the existing TED models usually focus on homogeneous isotropic micro/nano-resonators. In this paper, a closed-form TED model is derived to estimate the influence of the small-scale effect on TED of transversely isotropic micro/nano-resonators. The surface effect and the dual-phase-lag model are included to distinguish the influence of mechanical and thermal small-scale effects on TED, respectively. The obtained TED model is theoretically verified. The results indicate that TED values are underestimated if the classical TED model is employed. Moreover, a critical thickness can be determined by the frequency shift curve is proposed. The small-scale effect results in higher TED values within the critical thickness. However, since the small-scale effect has a weak influence on TED, it can be neglected when the resonator thickness is higher than the critical thickness. Additionally, the surface effect plays a dominant role in improving the TED of nano-resonators. In this paper, a more reasonable theoretical approach for estimating TED in transversely isotropic micro/nano-resonators is provided. © 2022
WOS研究方向	Mechanics ; Materials Science
语种	英语
出版者	Elsevier Ltd
WOS记录号	WOS:000826220900001
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158492]
专题	研究生院
作者单位	1.School of Science, Lanzhou University of Technology, Lanzhou; 730050, China 2.State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace, Xi'an Jiaotong University, Xi'an; 710049, China; 3.Key Laboratory of Service Environment and Intelligent Operation & Maintenance of Rail Transit, Gansu Province (Lanzhou Jiaotong University), Lanzhou; 730070, China; 4.School of Mechanical Engineering, Lanzhou Jiaotong University, Lanzhou; 730070, China;
推荐引用方式 GB/T 7714	Shi, Shuanhu,Jin, Feng,He, Tianhu,et al. Thermoelastic damping analysis model of transversely isotropic micro/nano-resonators based on dual-phase-lag heat conduction model and surface effect[J]. Composite Structures,2022,292.
APA	Shi, Shuanhu,Jin, Feng,He, Tianhu,&Shi, Guangtian.(2022).Thermoelastic damping analysis model of transversely isotropic micro/nano-resonators based on dual-phase-lag heat conduction model and surface effect.Composite Structures,292.
MLA	Shi, Shuanhu,et al."Thermoelastic damping analysis model of transversely isotropic micro/nano-resonators based on dual-phase-lag heat conduction model and surface effect".Composite Structures 292(2022).