接液弾性円板の固有振動数に関する研究 : 板厚,液体密度と粘度の影響

概要

論文の詳細を見る
The added mass of a vibrating plate in a fluid reduces the natural frequency of the plate in comparison with that in air. The ratio of the former to the latter is affected by the disc thinkness, the liquid density and a hole in the disc. In this research, two kinds of discs, 2.05 nm and 3.05 mm in thickness, and four kinds of liquids, 0.858, 0.890, 0.965, 1.000×10^3 kg/m^3 in density, are investigated to clarify their influences. In the experimental results, the values of the nondimensional formula, which contains the disc thickness or the liquid density, are almost the same at and below 0.33 in the ratio of the liquid depth to the diameter of the disc for the modes with a free surface. The effect of a circular hole in the center is very small, provided the area ratio of the hole to the plate without a hole is smaller than 0.0178.
一般社団法人日本機械学会の論文
1986-01-25