補助タンク付空気ばねにおける接続管路のばね特性への影響(機械力学,計測,自動制御)

概要

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Using an air spring and a subtank, the mechanism of variable spring rate can be realized only by operating an on-off valve located between them. When the valve is opened, static spring rate is determined by the volume of the air spring and the subtank. However, in the dynamic case it is expected that spring rate is harder than static spring because of the conduit influence which ratard the pressure transmission. Hence, it is necessary to clarify the efiect of the conduit on the dynamic spring rate. In this paper, frequency response tests, which indicate dynamic spring rates for cyclic displacement, have been conducted for various arrangements of the conduit. Results in high frequency show that the spring rate shifts to value calculated from only air spring volume though in low frequency range static spring rate is obtained. As result, it is found that the air mass in conduit causes this phenomenon and decides the shift frequency. These results can be simulated numerically and can be explained by the proposed model in which the conduit is treated with a lumped model.
一般社団法人日本機械学会の論文
1997-06-25