Abstract
In this article, an Euler-Bernoulli beam model based upon nonlocal thermoelasticity theory without energy dissipation is used to study the vibration of a nanobeam subjected to ramp-type heating. Classical continuum theory is inherently size independent, while nonlocal elasticity exhibits size dependence. Among other things, this leads to a new expression for the effective nonlocal bending moment as contrasted to its classical counterpart. The thermal problem is addressed in the context of the Green-Naghdi (GN) theory of heat transport without energy dissipation. The governing partial differential equations are solved in the Laplace transform domain by the state space approach of modern control theory. Inverse of Laplace transforms are computed numerically using Fourier expansion techniques. The effects of nonlocality and ramping time parameters on the lateral vibration, temperature, displacement and bending moment are discussed.
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Elias C. Aifantis is a Professor of Mechanics at Aristotle University of Thessaloniki/ GR, Emeritus Professor at Michigan Technological University/USA, Distinguished Adjunct Professor at King Abdulaziz University/SA and (formerly) Distinguished Foreign Expert at ITMO University/RU. He has promoted highly interdisciplinary work in mechanics of materials by bringing into the field of solids mechanics ideas from diffusion theory, chemical reactions, and nonlinear physics. He published about 550 articles and received > 7400 citations with 43 h-factor (ISI Web of Science). He has also included in the ISI Web of knowledge list of the world’s most highly cited authors in engineering.
A. M. Zenkour is a Professor of Applied Mathematics at King Abdulaziz University (Saudi Arabia). His research interests are in structural stability, vibration, plated structures and shells. He is the author or co-author of over 150 scientific publications, reviewer of many international journals in solid mechanics and applied mathematics, and an editorial member of some Journals. In addition, he delivered various lectures at national and international conferences. His research papers have been cited in many articles and textbooks. He has contributed to the development and application of continuum mechanics for predicting the bending, vibration and buckling behaviour of hygrothermal structures.
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Zenkour, A.M., Abouelregal, A.E., Alnefaie, K.A. et al. State space approach for the vibration of nanobeams based on the nonlocal thermoelasticity theory without energy dissipation. J Mech Sci Technol 29, 2921–2931 (2015). https://doi.org/10.1007/s12206-015-0623-y
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DOI: https://doi.org/10.1007/s12206-015-0623-y