Results 171 to 180 of about 5,618 (212)

Thermoelastic damping and frequency shift of different micro-scale piezoelectro-magneto-thermoelastic beams

Physica Scripta, 2023
Abstract This work focuses on mathematically studying thermoelastic damping (TED) and frequency shift (FS) in micro-scale piezoelectro-magneto-thermoelastic (PEMT) composite beams composed of BaTiO3-CoFe2O4 combination. Pertaining to cutting-edge micro-technologies implemented in several engineering/scientific applications now-a-days ...
Sayantan Guha, Abhishek Kumar Singh, Sonam Singh   +2 more
openaire   +1 more source

Thermoelastic Damping in Hollow and Slotted Microresonators

Journal of Microelectromechanical Systems, 2009
Microresonators employed in microelectromechanical systems for sensing and communications are growing increasingly more sophisticated in terms of structural geometry and mode shapes. Accompanying this increase in sophistication is a corresponding need to develop accurate analytical models to predict the dynamic properties of such resonators.
S. Prabhakar, S. Vengallatore
openaire   +1 more source

Thermoelastic Damping in Clamped-Clamped Annular Microplate

Applied Mechanics and Materials, 2011
In this paper, a linear model of thermoelastic damping in annular microplate is considered for calculating the quality factor of this damping. In this model clamped boundary condition is applied in inner and outer circular edges. In the results, there are critical radius and thickness which are calculated analytically and in these dimensions, the ...
N. Ale Ali, A. Karami Mohammadi
openaire   +1 more source

Engineering MEMS Resonators With Low Thermoelastic Damping

Journal of Microelectromechanical Systems, 2006
This paper presents two approaches to analyzing and calculating thermoelastic damping in micromechanical resonators. The first approach solves the fully coupled thermomechanical equations that capture the physics of thermoelastic damping in both two and three dimensions for arbitrary structures. The second approach uses the eigenvalues and eigenvectors
Amy Duwel, Rob N. Candler, Thomas W. Kenny, Mathew Varghese   +3 more
openaire   +1 more source

A Second-Law Analysis of Thermoelastic Damping

Journal of Applied Mechanics, 1994
In accordance with the Thomson effect (Thomson, 1853), when a thermoelastic solid is subjected to a tensile stress, it cools. Similarly, when a homogeneous material is subjected to an inhomogeneous stress field or when an heterogeneous material is subjected to any stress field (homogeneous or inhomogeneous), different parts of the material undergo ...
V. K. Kinra, K. B. Milligan
openaire   +1 more source

Thermoelastic Damping in Functionally Graded Microbeam Resonators

IEEE Sensors Journal, 2017
Recently, the functionally graded materials (FGMs) have gained considerable attention. The thermoelastic damping (TED) plays an important role in the inherent energy dissipation of the microbeam resonators. In this paper, TED in the FGMs microbeam and composite beam resonator are derived and investigated.
Zuo-Yang Zhong, Jian-Ping Zhou, Hai-Lian Zhang   +2 more
openaire   +1 more source

Thermoelastic damping in trench-refilled polysilicon resonators

TRANSDUCERS '03. 12th International Conference on Solid-State Sensors, Actuators and Microsystems. Digest of Technical Papers (Cat. No.03TH8664), 2004
This paper presents quality factor measurement results for trench-refilled (TR) polysilicon beam resonators which demonstrate an increase in Q as their resonant frequency increases, a trend opposite to what is expected from solid beams of the same dimensions.
R. Abdolvand, G.K. Ho, A. Erbil, F. Ayazi   +3 more
openaire   +1 more source

Thermoelastic damping analysis in microbeam resonators based on Moore–Gibson–Thompson generalized thermoelasticity theory

Acta Mechanica, 2020
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Harendra Kumar, Santwana Mukhopadhyay
openaire   +2 more sources

Thermoelastic damping in bilayered micromechanical beam resonators

Journal of Micromechanics and Microengineering, 2007
A detailed analysis of thermoelastic damping (TED) is essential in the design of the next generation of layered composite microresonators employed in microelectromechanical systems (MEMS) for sensing and communications. Here, we present an exact theory to compute the frequency dependence of thermoelastic damping in asymmetric, bilayered ...
Sairam Prabhakar, Srikar Vengallatore
openaire   +1 more source

Thermoelastic Damping in Flexural-Mode Ring Gyroscopes

Microelectromechanical Systems, 2005
This paper provides a comprehensive derivation for thermoelastic damping (TED) in flexural-mode ring gyroscopes, in light of recent efforts to design high rate-resolution gyroscopes. Imposing an upper limit on the attainable mechanical noise floor of a vibratory gyroscope, thermoelastic damping in a ring gyroscope is extracted from the equations of ...
Zhili Hao, Farrokh Ayazi
openaire   +1 more source