トライボロジスト
Online ISSN : 2189-9967
Print ISSN : 0915-1168
ISSN-L : 0915-1168
65 巻 , 1 号
特集・研究会がリードするトライボロジー分野の最新動向
選択された号の論文の23件中1~23を表示しています
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巻頭言
特集・研究会がリードするトライボロジー分野の最新動向
解説
入門講座・トライボロジー教室
随筆・トライボ草子
トライボロジー・ナウ・トライボロジー海外体験記 ―アラウンド・ザ・ワールド―
学術論文
  • ―液体の状態方程式の提案と高圧密度の推算―
    金子 正人
    2020 年 65 巻 1 号 p. 45-60
    発行日: 2020/01/15
    公開日: 2020/01/15
    [早期公開] 公開日: 2019/11/19
    ジャーナル フリー
    電子付録

    The physical properties of lubricant under high temperature and high pressure include high pressure viscosity, high pressure density, bulk modulus, coefficient of thermal expansion, etc. It is important to know these high pressure physical properties in machine design. However, almost no discussion has been made on the liquid state equation, which is the basis of the high pressure physical properties of these lubricants. Therefore, in this report, using the high pressure density measuring device, the volume was obtained from the measurement of the density at each temperature and pressure, and the PVT relational equation was derived. Further, Vt=0 (absolute zero degree volume), RL (liquid constant), PR (correction pressure for the pressure decrease due to liquid intermolecular force) included in this equation are liquid specific constants. This equation is consistent with the ideal liquid state equation derived from thought experiments, and it was found that this equation could be utilized as a liquid state equation of high utility. In addition, we can estimate the high pressure density which is one of the high pressure physical properties of the lubricant by this liquid state equation.

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