Fractional order and memory-dependent analysis to the dynamic response of a bi-layered structure due to laser pulse heating

doi:10.1016/j.ijheatmasstransfer.2019.118664

IR > 研究生院

	Fractional order and memory-dependent analysis to the dynamic response of a bi-layered structure due to laser pulse heating
	Li, Yan; Zhang, Pei; Li, Chenlin; He, Tianhu
	2019-12
发表期刊	INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
ISSN	0017-9310
卷号	144
摘要	Ultrashort laser technology has been widely used in micro-machining due to its high power, precision of operation, low cost, high control and extremely short duration. This motivates us to investigate the transient response of a bi-layered structure subjected to a non-Gaussian laser beam on its bounding surface in the context of the time-fractional derivative based on generalized thermoelastic theories. Comparison studies between the fractional order and the memory-dependent derivative models are performed and the thermal contact resistance at the interface is also considered. The coupled governing equations involving with thermal relaxation time, fractional order parameter, time delay and kernel function, which can be chosen freely according to specific problems, are solved by using Laplace transform technique together with its numerical inversion. During the analysis, the first layer is selected as the copper material and the material characteristic parameters of the second layer such as the thermal conductivity, mass density and specific heat capacity are given by ratios to those of the first layer. The influences of the material characteristic parameters on the heat conduction and the structural responses are emphatically discussed, and the non-dimensional temperature, displacement as well as stress at different values of fractional order parameter, time delay factor, kernel function and thermal contact resistance are obtained and illustrated graphically. Finally, based on the obtained results, the bi-layered structure heated by a non-Gaussian laser beam may be reasonably designed in engineering. (C) 2019 Elsevier Ltd. All rights reserved.
关键词	Generalized thermoelasticity Fractional order Memory-dependent derivative Non-Gaussian laser pulse Bi-layered structure
DOI	10.1016/j.ijheatmasstransfer.2019.118664
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[11372123]
WOS研究方向	Thermodynamics ; Engineering ; Mechanics
WOS类目	Thermodynamics ; Engineering, Mechanical ; Mechanics
WOS记录号	WOS:000494883300060
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：19[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/64206
专题	研究生院经济管理学院
通讯作者	He, Tianhu
作者单位	Lanzhou Univ Technol, Sch Sci, Lanzhou 730050, Gansu, Peoples R China
第一作者单位	理学院
通讯作者单位	理学院
第一作者的第一单位	理学院
推荐引用方式 GB/T 7714	Li, Yan,Zhang, Pei,Li, Chenlin,et al. Fractional order and memory-dependent analysis to the dynamic response of a bi-layered structure due to laser pulse heating[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2019,144.
APA	Li, Yan,Zhang, Pei,Li, Chenlin,&He, Tianhu.(2019).Fractional order and memory-dependent analysis to the dynamic response of a bi-layered structure due to laser pulse heating.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,144.
MLA	Li, Yan,et al."Fractional order and memory-dependent analysis to the dynamic response of a bi-layered structure due to laser pulse heating".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 144(2019).