Air Damping Effects of MEMS Parallel-Plate Structure Using ANSYS Thin Film Analysis

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Abstract:

ANSYS thin film analysis was adopted to simulate the effects of squeeze film damping. The relation of damping effects versus operating frequency, velocity, material accommodation factor was analyzed, and the gas squeeze film damping and pressure distribution was simulated by steady-state analysis or harmonic analysis. Moreover, pressure distribution of damping effect in plate gap both with perforated holes and without holes, were determined and compared. Simulation results show that operating frequency and the structure of microstructures are the main influencing factors to air damping and perforated holes in plate gap can control stiffness coefficients of squeezed film damping.

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Advanced Materials Research (Volumes 403-408)

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4588-4592

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November 2011

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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[1] Yang Y J. Squeeze-Film Damping for MEMS Structures [D]. Massachusetts: Massachusetts Institute of Technology. (1998).

Google Scholar

[2] Veijola T. Equivalent Circuit Models for Micromechanical Inertial Sensors[R]. Helsinki: Helsinki University of Technology, Theory Laboratory Report Series, (1999).

Google Scholar

[3] J.B. Starr. Squeeze-Film damping in Solid-State Accelerometers. Solid-State Sensor and Actuator Workshop, 1990, pp.44-47.

DOI: 10.1109/solsen.1990.109817

Google Scholar

[4] Feixia P, Joel K, Eric P, et al. Squeeze Film Damping Effect on the Dynamic Response of a MEMS Torsion Mirror [J]. Journal of Micromechanics and Microengineering, 1998, 8(3): 200-208.

DOI: 10.1088/0960-1317/8/3/005

Google Scholar

[5] Satish Vemuri. Behavioral Modeling of Viscous Damping in MEMS [D]. Pennsylvania: Carnegie Mellon Univeristy. (2000).

Google Scholar

[6] Mehner Jan E, Wolfram Doetzel, Bemd Schauwecker, et al. Reduced order modeling of fluid structural interactions in MEMS based on modal projection techniques[R]. Boston: 12th International Conference on Solid-State Sensors, Actuators and Microsystems, 2003: 1840-1843.

DOI: 10.1109/sensor.2003.1217146

Google Scholar

[7] Langlois W E. Isothermal Squeeze Films [J]. International Business Machines Corporation Research Laboratory: Quarterly Applied Mathematics, 1962, 20(2): 131-150.

DOI: 10.1090/qam/99963

Google Scholar

[8] Dale Ostergaard ANSYS inc. Using a heat transfer analogy to solve for squeeze film damping and stiffness coefficients in MEMS structures[EB/OL]. (2003-01-23)[2010-04-21].

Google Scholar