124 粘性絞りを有する空気ばねの特性(機素・潤滑)

概要

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In this study we propose a design procedure of a air suspension with a viscous damping restriction and a sub tank. In low frequency region, the damping caused by viscousity of restrictor relatively large and the main cylinder and the sub tank acts as an air suspension. In high frequency region, restrictor chokes due to the compressibility of air and only the main cylinder acts as an air suspension. We use two design concepts of minimizing resonance amplitude and minimizing RMS of amplitude. In order to reducing resonance amplitude and RMS of amplitude, it is necessary to increase the ratio of the volume of the sub tank to that of the main cylinder. In these case, we can choose the optimal value of flow coefficient about restrictor to minimize resonance amplitude and RMS of amplitude. As the volume ratio becomes larger, the difference between the flow coefficient which provides minimum resonance amplitude and what provides minimum RMS becomes larger. However, we can realize the air suspension whose RMS of amplitude is relatively small although we choose the volume ratio and flow coefficient to minimize the resonance amplitude. In the case that volume ratio is 5, RMS of amplitude becomes only 110% of minimum RMS.
社団法人日本機械学会の論文
2001-09-07