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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Parkos, D. Raghunathan, N. Venkattraman, A. Sanborn, B. Weinong Chen Peroulis, D. Alexeenko, A. |
| Copyright Year | 1992 |
| Abstract | This paper introduces and experimentally validates a new model for near-contact gas damping of microbeams. The model is formulated based on numerical simulations of rarefied gas dynamics using the Boltzmann Ellipsoidal Statistical Bhatnagar-Gross-Krook (ES-BGK) equation. The result is compared with existing models by simulating the motion of beams under high-g acceleration. To experimentally validate the damping models, single crystal silicon MEMS g-switches with cantilever microbeams of various lengths were utilized. The experimental measurements of beam dynamics under peak accelerations of approximately 50,000 g and acceleration ramp rates from 600 to 3,000 g/μs are compared with simulations. Additionally, the damping coefficients are extracted from existing vibrational mode data, and the resulting values are compared to the various models. The new near-contact model was found to predict contact and release times within a root-mean-square deviation from experiment below 9 and 7 for contact and release events, respectively. The damping values for the vibrational modes away from contact were predicted within 33% error, showing a more consistent predictive capability than provided by earlier models. |
| Sponsorship | IEEE Electron Devices Society American Society of Mechanical Engineering (ASME) |
| Starting Page | 1089 |
| Ending Page | 1099 |
| Page Count | 11 |
| File Size | 14581313 |
| File Format | |
| ISSN | 10577157 |
| Volume Number | 22 |
| Issue Number | 5 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2013-10-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Damping Mathematical model Aerodynamics Micromechanical devices Acceleration Equations Numerical models beams Gas damping acceleration measurement modeling |
| Content Type | Text |
| Resource Type | Article |
| Subject | Mechanical Engineering Electrical and Electronic Engineering |
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