2308 液体メニスカス架橋の力学特性に関する実験的研究(要旨講演,情報機器コンピュータメカニクス)

概要

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Mechanical characteristics of a liquid meniscus bridge were investigated experimentally using a newly developed apparatus. In the present study, characteristics of the force curve and the vibration transfer of a liquid meniscus bridge between a sphere and a plane were investigated. From the force curve results, difference between the maximum meniscus forces of the approach process and that of the withdrawal process was found and the hysteresis was observed. It was found that these phenomenon could be understood by considering the advancing and receding contact angles. From the vibration transfer results, the experimental resonance curve was similar to the theoretical curve obtained using the VCA model when the excitation amplitude was small, but at the excitation amplitude increases, the experimental results tended to approach the theoretical curve obtained using the VBP model. Moreover, the spring constant of the meniscus bridge was found positive when the contact angle was large.
2007-03-19