TY - JOUR
T1 - Thermoelastic damping in nanomechanical resonators with finite wave speeds
AU - Khisaeva, Z. F.
AU - Ostoja-Starzewski, M.
N1 - Funding Information:
Communicated by Józef Ignaczak on April 20, 2005. We benefited from discussions with Prof. S. Vengallatore. This work was made possible by the support of the Canada Research Chairs program and the funding from NSERC. Address correspondence to M. Ostoja-Starzewski, Department of Mechanical and Industrial Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801.
PY - 2006/3
Y1 - 2006/3
N2 - The operation of micro-/nanobeams vibrating at very high frequencies, such as encountered in micro-/nanoelectromechanical systems (MEMS/NEMS), hinges on the minimization of intrinsic material losses. We study the associated thermoelastic damping in such beams from the standpoint of a generalized theory of thermoelasticity with one relaxation time. Some of our results relate to: (i) the cooling (instead of heating) in the compressed surface of the beam; (ii) the existence of not one damping peak appearing in the classical theory, but many peaks, with a decreasing amplitude as the frequency tends to infinity; (iii) the relevance of thermoelasticity with finite wave speeds for frequencies on the order of 10 12 Hz.
AB - The operation of micro-/nanobeams vibrating at very high frequencies, such as encountered in micro-/nanoelectromechanical systems (MEMS/NEMS), hinges on the minimization of intrinsic material losses. We study the associated thermoelastic damping in such beams from the standpoint of a generalized theory of thermoelasticity with one relaxation time. Some of our results relate to: (i) the cooling (instead of heating) in the compressed surface of the beam; (ii) the existence of not one damping peak appearing in the classical theory, but many peaks, with a decreasing amplitude as the frequency tends to infinity; (iii) the relevance of thermoelasticity with finite wave speeds for frequencies on the order of 10 12 Hz.
KW - Generalized thermoelasticity
KW - Nanoelectromechanical systems
KW - Thermoelastic damping
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U2 - 10.1080/01495730500257490
DO - 10.1080/01495730500257490
M3 - Article
AN - SCOPUS:31744444333
SN - 0149-5739
VL - 29
SP - 201
EP - 216
JO - Journal of Thermal Stresses
JF - Journal of Thermal Stresses
IS - 3
ER -