Optimal design of nonlinear hydraulic engine mount |
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Authors: | Young Kong Ahn Jin Dae Song Bo-Suk Yang Kyoung Kwan Ahn Shin Morishita |
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Affiliation: | 1. Research Center for Machine Parts and Material Processing, University of Ulsan, San 29, Muger 2-Dong, 680-749, Ulsan, Korea 2. School of Mechanical Engineering, Pukyong National University, San 100, Yongdang-dong, Nam-gu, 608-739, Busan, Korea 3. Research Center for Machine Parts and Material Processing, School of Mechanical & Automotive Engineering, University of Ulsan, 680-749, Ulsan, Korea 4. Graduate School of Environment and Information Sciencies, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, 240-8501, Yokohama, Japan
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Abstract: | This paper shows that the performance of a nonlinear fluid engine mount can be improved by an optimal design process The property
of a hydraulic mount with inertia track and decouplen differs according to the disturbance frequency range. Since the excitation
amplitude is large at low excitation frequency range and is small at high excitation frequency range, mathematical model of
the mount can be divided into two linear models One is a low frequency model and the other is a high frequency model The combination
of the two models is very useful in the analysis of the mount and is used for the first time in the optimization of an engine
mount in this paper Normally, the design of a fluid mount is based on a trial and error approach in industry because there
are many design parameters In this study, a nonlinear mount was optimized to minimize the transmissibilities of the mount
at the notch and the resonance frequencies for low and high-frequency models by a popular optimization technique of sequential
quadratic programming (SQP) supported by MATLAB(r) subroutine. The results show that the performance of the mount can be greatly improved for the low and high frequencies ranges
by the optimization method |
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Keywords: | Fluid Mount Nonlinear Fluid Mount Optimal Design |
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