Abstract
Array forms of MEMS resonator that uses a specific mid-frequency normal mode have been introduced for acquiring a wider bandwidth of frequency response function (FRF). A conventional frequency response solver based on a modal approach faces computational difficulties in obtaining the FRF of these array forms because of the increase in the order of a linear dynamic model and the number of retained normal modes. The computational difficulties can be resolved by using a substructuring-based model order reduction and a frequency sweep algorithm, which requires a smaller number of retained modes of a reduced dynamic system than the conventional solver. In computing the FRF of a single resonator and its array forms, the presented method shows much better efficiency than the conventional solution by ANSYS as the number of resonators increases. In addition, the effects of multiple resonators in the array forms on filter performance are discussed compared with experimental data.
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This paper was recommended for publication in revised form by Associate Editor Maenghyo Cho
Jin Hwan Ko received his B.S. degree in Mechanical Engineering from KAIST, Korea, in 1995. He then received his M.S. and Ph.D. degrees from KAIST in 1997 and 2004, respectively. Dr. Ko is currently a research professor at the School of Mechanical and Aerospace Engineering at Seoul National University in Seoul, Korea. His research interests include fluid-structure interaction analysis in a bio-mimetic and biomedical applications as well as model order reduction for multi-physics and multiscale systems.
Jeong Sam Han received his B.S. degree in Mechanical Engineering from Kyungpook National University, Korea, in 1995. He then went on to receive his M.S. and Ph.D. degrees from KAIST, Korea, in 1997 and 2003, respectively. Dr. Han is currently a professor at the School of Mechanical Engineering at Andong National University in Andong, Korea. Prof. Han’s research interests cover the area of model order reduction, structural optimization, and MEMS simulation, etc.
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Ko, J.H., Byun, D. & Han, J.S. An efficient numerical solution for frequency response function of micromechanical resonator arrays. J Mech Sci Technol 23, 2694–2702 (2009). https://doi.org/10.1007/s12206-009-0721-9
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DOI: https://doi.org/10.1007/s12206-009-0721-9