| Affiliation: | (1) Mechanical Engineering Department, Urmia University, Urmia, Iran;(2) Mechanical & Aeronautical Engineering Faculty, Clarkson University, Potsdam, NY 13699-5725, USA;(3) Aerospace Engineering Department, Faculty of New Technology and Energy Engineering, Shahid Beheshti, Tehran, Iran |
| Abstract: | In this paper, analytical expressions for the quality factor (QF) of thermoelastic damping (TED) applying modified couple
stress theory (MCST) are presented for plane stress and strain conditions. For gold and nickel micro-beam resonators, which
have a considerable length-scale parameter as case studies, the effect of the length-scale parameter on the QF of TED has
been discussed in details. Results for the QF of TED show that when the beam thickness is close to the length-scale parameter
of the material, the MCST diverges from the classical theory; otherwise, the two theories converge to each other. Also critical
thickness variation due to applying MCST is studied. |
