油圧管路における波動現象の研究 : 第17報,液柱分離と張力波

概要

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The present report deals with an investigation of tensile stress waves in oil. Experimantally generated pressure pu1ses below absolute zero turn out to propagate through an oil column exactly as the ordinary wave theory predicts, which verifies the reality of tensile stress waves. Absolute negative pressures after the separation cavity collapses, which have been theoretically predicted under the assumption that gas is not released in an oil column during the separation, are also confirmed for the first time. However the measured pressure wave shapes do not agree with the theoretical predictions in this case. Considerations of these results lead to the hypothesis that oil loaded with a tensile stress wave ruptures, depending on the duration and amplitude of the absolute negative pressure and also on the defects in oil constitution.
一般社団法人日本機械学会の論文
1990-04-25