著者

高原 弘樹 新庄 拓也 中野 寛

出版者

一般社団法人 日本機械学会

雑誌

日本機械学会関東支部総会講演会講演論文集 2016.22 (ISSN:24242691)

巻号頁・発行日

pp._OS1105-1_-_OS1105-2_, 2016-03-10 (Released:2017-06-19)

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In recent years, the vibration system which has negative mass characteristics, called meta-material, attracts attention. This system consists of two single-degree-of-freedom system. This two-degree-of-freedom system can be represented to an equivalent single-degree-of-freedom system. In case of the subsystem without a damping, the effective mass of this equivalent system has the negative mass characteristics. When the damping of the system is taken into consideration, the effects of the damping on these negative mass characteristics are not clarified. The effects of damping upon characteristic of vibration system with negative effective mass are investigated. The condition of the negative mass characteristics is derived with a damped subsystem. The effects of the damping of subsystem on the negative mass characteristics are discussed.

著者

青山 拓哉 天谷 賢児 福永 明 檜山 浩國 濱田 聡美

出版者

一般社団法人 日本機械学会

雑誌

日本機械学会関東支部総会講演会講演論文集 2016.22 (ISSN:24242691)

巻号頁・発行日

pp._OS0108-1_-_OS0108-2_, 2016-03-10 (Released:2017-06-19)

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Evaporation behavior of small droplet on wafer with various film was investigated. The droplet evaporation process was categorized into two types, i.e. constant contact radius (CCR) and constant contact angle (CCA) types. In the previous research, the evaporation behavior of relatively large droplets have reported and it was confirmed that the behavior was able to predict by a simple diffusion model. In this study, the same model was applied to the small droplet. As a result, the developed model was agreed with the experimental data in the case of relatively small droplets.