基于Caputo-Fabrizio定义的热弹性分数阶应变理论下金纳米梁的振动

IF 1.4 4区 工程技术 Q3 ENGINEERING, MECHANICAL Journal of Strain Analysis for Engineering Design Pub Date : 2023-01-12 DOI:10.1177/03093247221145792
Eman A. N. Al-Lehaibi
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引用次数: 2

摘要

在本研究中,首次采用分数阶应变计算了数值解。针对各向同性均匀纳米梁,研究了基于Caputo-Fabrizio分数阶导数定义的单松弛时间热弹性和分数阶应变理论。在热载荷和简支边界条件下,对控制方程进行拉普拉斯变换,并利用Tzou技术近似计算其反演。本文对热弹性矩形金纳米梁的数值计算进行了验证,并将其作为考虑斜坡型热的模型。在二维图中描述了几种情况的计算解,以研究分数阶和斜坡热参数对所研究的所有函数的影响。温度增量分布、横向振动、变形、张力和能量密度均受分数阶和斜坡时间热参数的影响。斜坡时间热参数可以用来调节热弹性纳米梁的振动和能量阻尼。
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The vibration of a gold nanobeam under the thermoelasticity fractional-order strain theory based on Caputo–Fabrizio’s definition
For the first time, numerical solutions were computed using fractional-order strain considerations in the current study. For an isotropic and homogeneous nanobeam, the thermoelasticity with one relaxation time and fractional-order strain theory based on Caputo–Fabrizio’s definition of fractional derivative was examined. With thermal loading and in simply supported boundary conditions, the Laplace transformations have been used upon the governing equations and its inversion was computed using the Tzou technique approximation. The numerical calculations for a thermoelastic rectangular gold (Au) nanobeam have been validated as a model where ramp-type heat is considered. The computational solutions have been depicted in two-dimensions graphs for several situations to investigate the impact of the fractional-order and ramping heat parameters on all of the functions studied. The temperature increment distribution, lateral vibration, deformation, tension, and energy density are all influenced by fractional-order and ramp-time heat parameters. The ramp-time heat parameter might be utilized to regulate nanobeam vibration and energy damping in thermoelastic nanobeams.
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来源期刊
Journal of Strain Analysis for Engineering Design
Journal of Strain Analysis for Engineering Design 工程技术-材料科学:表征与测试
CiteScore
3.50
自引率
6.20%
发文量
25
审稿时长
>12 weeks
期刊介绍: The Journal of Strain Analysis for Engineering Design provides a forum for work relating to the measurement and analysis of strain that is appropriate to engineering design and practice. "Since launching in 1965, The Journal of Strain Analysis has been a collegiate effort, dedicated to providing exemplary service to our authors. We welcome contributions related to analytical, experimental, and numerical techniques for the analysis and/or measurement of stress and/or strain, or studies of relevant material properties and failure modes. Our international Editorial Board contains experts in all of these fields and is keen to encourage papers on novel techniques and innovative applications." Professor Eann Patterson - University of Liverpool, UK This journal is a member of the Committee on Publication Ethics (COPE).
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