Thermoelastic damping analysis of size-dependent nano-resonators considering dual-phase-lag heat conduction model and surface effect

doi:10.1016/j.ijheatmasstransfer.2021.120977

IR > 研究生院

	Thermoelastic damping analysis of size-dependent nano-resonators considering dual-phase-lag heat conduction model and surface effect
	Shi, Shuanhu 1,2; He, Tianhu3 ; Jin, Feng 2
	2021-05
发表期刊	International Journal of Heat and Mass Transfer
ISSN	0017-9310
卷号	170
摘要	Thermoelastic damping (TED) is one of the main energy dissipation sources of high performance resonators at room temperature, however, the classical TED model fails at the nano-scale due to the influence of small scale effect. In this paper, a novel TED model is proposed to estimate the impact of both mechanical and thermal small scale effects on TED of nano-resonators. The surface elastic theory and the dual-phase-lag heat conduction model (DPL model) are first combined to establish the TED model. Analytical expression of the TED model is derived, which can reduce to the classical TED model. In numerical simulations, a critical thickness is proposed to identify the influence of small scale effect on TED. Small scale effect significantly improves TED of resonators within the critical thickness, which however can be neglected as the resonator thickness is greater than the critical thickness. Moreover, surface effect has stronger effect than non-Fourier heat conduction on improving TED of nano-resonators. Additionally, influences of the other key factors on TED are examined in detail. This paper provides a more reasonable theoretical approach to estimate TED in the design of high performance nano-resonators. © 2021
关键词	Damping Energy dissipation Heat conduction Nanotechnology Resonators Thermoelasticity Analytical expressions Critical thickness Elastic theory Heat conduction models Non-Fourier heat conduction Small scale effects Theoretical approach Thermoelastic damping
DOI	10.1016/j.ijheatmasstransfer.2021.120977
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Thermodynamics ; Engineering ; Mechanics
WOS类目	Thermodynamics ; Engineering, Mechanical ; Mechanics
WOS记录号	WOS:000641140400015
出版者	Elsevier Ltd
EI入藏号	20210609891231
EI主题词	Thermoacoustics
EI分类号	525.4 Energy Losses (industrial and residential) ; 641.2 Heat Transfer ; 751 Acoustics, Noise. Sound ; 761 Nanotechnology ; 931.1 Mechanics ; 931.2 Physical Properties of Gases, Liquids and Solids
来源库	WOS
引用统计	被引频次：24[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/147735
专题	研究生院
通讯作者	Shi, Shuanhu
作者单位	1.Lanzhou Jiaotong Univ, Sch Mech Engn, Key Lab Rail Transit Serv Environm & Intelligent, Lanzhou 730070, Peoples R China; 2.Xi An Jiao Tong Univ, Sch Aerosp, State Key Lab Strength & Vibrat Mech Struct, Xian 710049, Peoples R China; 3.Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Shi, Shuanhu,He, Tianhu,Jin, Feng. Thermoelastic damping analysis of size-dependent nano-resonators considering dual-phase-lag heat conduction model and surface effect[J]. International Journal of Heat and Mass Transfer,2021,170.
APA	Shi, Shuanhu,He, Tianhu,&Jin, Feng.(2021).Thermoelastic damping analysis of size-dependent nano-resonators considering dual-phase-lag heat conduction model and surface effect.International Journal of Heat and Mass Transfer,170.
MLA	Shi, Shuanhu,et al."Thermoelastic damping analysis of size-dependent nano-resonators considering dual-phase-lag heat conduction model and surface effect".International Journal of Heat and Mass Transfer 170(2021).