Effect of the speed,the rotation and the magnetic field on the Q-factor of an axially clamped gold micro-beam |
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| Authors: | Hamdy M Youssef Khaled A Elsibai Alaa A El-Bary |
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| Institution: | 1.Faculty of Engineering, Mechanics Department,Umm Al-Qura University,Mecca,Kingdom of Saudi Arabia;2.Mathematics Department, Faculty of Education,Alexandria University,Alexandria,Egypt;3.Mathematics Department, Faculty of Sciences,Umm Al-Qura University,Mecca,Kingdom of Saudi Arabia;4.Basic and Applied Science,Arab Academy for Science and Technology,Alexandria,Egypt |
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| Abstract: | In this paper, a study of the thermoelastic damping of a gold microbeam resonator in the context of the generalized thermoelasticity with one relaxation time has been improved. An explicit formula of thermoelastic damping has been derived in general form includes the speed of the beam in the direction of its principal axis and without any external body force. Influences of the speed, the rotation, and the magnetic field have been studied. We discussed the effect of the speed of the beam, the rotation, and the magnetic field on the thermoelastic damping (Q-factor). The moving and the rotation of the microbeam have significant effects on the thermoelastic damping and the energy dissipation. The external magnetic field with tiny induced magnetic field acts on the microbeam has a significant effect on the thermoelastic damping and the energy dissipation. The energy dissipation of the microbeam decreases when the speed of the microbeam, the rotation angular speed, and the external magnetic field acts on the microbeam decrease. |
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