DocumentCode :
3302270
Title :
Simulation tools for damping in high frequency resonators
Author :
Koyama, Tsuyoshi ; Bindel, David S. ; He, Wei ; Quévy, Emmanuel P. ; Govindjee, S. ; Demmel, James W. ; Howe, Roger T.
Author_Institution :
Dept. of Civil & Environ. Eng., California Univ., Berkeley, CA
fYear :
2005
fDate :
Oct. 30 2005-Nov. 3 2005
Abstract :
This paper presents the development of HiQLab, a simulation tool to compute the effect of damping in high frequency resonators. Existing simulation tools allow designers to compute resonant frequencies but few tools provide estimates of damping, which is crucial in evaluating the performance of such devices. In the current code, two damping mechanisms: thermoelastic damping and anchor loss, have been implemented. Thermoelastic damping results from irreversible heat flow due to mechanically-driven temperature gradients, while anchor loss occurs when high-frequency mechanical waves radiate away from the resonator and into the substrate. Our finite-element simulation tool discretizes PDE models of both phenomena, and evaluates the quality factor (Q), a measure of damping in the system, with specialized eigencomputations and model reduction techniques. The core functions of the tool are written in C++ for performance. Interfaces are in Lua and MATLAB, which give users access to powerful visualization and pre- and postprocessing capabilities
Keywords :
Q-factor; damping; finite element analysis; reduced order systems; resonators; software tools; HiQLab; PDE models; anchor loss damping; eigencomputations technique; finite-element simulation tool; high frequency resonators; irreversible heat flow; model reduction; quality factor; thermoelastic damping; Computational modeling; Damping; Finite element methods; Frequency estimation; Mathematical model; Power system modeling; Q factor; Resonant frequency; Temperature; Thermoelasticity;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Sensors, 2005 IEEE
Conference_Location :
Irvine, CA
Print_ISBN :
0-7803-9056-3
Type :
conf
DOI :
10.1109/ICSENS.2005.1597708
Filename :
1597708
Link To Document :
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