Size-dependent thermoelasticity of a finite bi-layered nanoscale plate based on nonlocal dual-phase-lag heat conduction and Eringen's nonlocal elasticity

作     者：Zhangna XUE Gongqi CAO Jianlin LIU Zhangna XUE;Gongqi CAO;Jianlin LIU

作者机构：College of Pipeline and Civil EngineeringChina University of Petroleum(East China)Qingdao 266580Shandong ProvinceChina 

出 版 物：《Applied Mathematics and Mechanics(English Edition)》 (应用数学和力学（英文版）)

年 卷 期：2021年第42卷第1期

页      面：1-16页

核心收录：

学科分类：08[工学] 080102[工学-固体力学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：Project supported by the National Natural Science Foundation of China(Nos.12002391 and11972375) the China Postdoctoral Science Foundation Funded Project(No.2019TQ0355) the Strategic Priority Research Program of the Chinese Academy of Sciences(No.XDA14010303) the Open Projects of State Key Laboratory for Strength and Vibration of Mechanical Structures(No.SV2020-KF-12) 

主　　题：thermoelasticity size effect multi-layered nanostructure 

摘      要：The size effects on heat conduction and elastic deformation are becoming significant along with the miniaturization of the device and wide application of ultrafast *** this work,to better describe the transient responses of nanostructures,a size-dependent thermoelastic model is established based on nonlocal dual-phase-lag(N-DPL)heat conduction and Eringen s nonlocal elasticity,which is applied to the one-dimensional analysis of a finite bi-layered nanoscale plate under a sudden thermal *** the numerical part,a semi-analytical solution is obtained by using the Laplace transform method,upon which the effects of size-dependent characteristic lengths and material properties of each layer on the transient responses are discussed *** results show that the introduction of the elastic nonlocal parameter of Medium 1 reduces the displacement and compressive stress,while the thermal nonlocal parameter of Medium 1 increases the deformation and compressive *** findings may be beneficial to the design of nano-sized and multi-layered devices.