平面板の自由振動及び強制振動に及ぼす防撓材の影響に就て

概要

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As the preventive measure against the vibrations that occur often in various parts of ship construction, we have, first of all, to estimate accurately the frequencies and modes of the natural vibration of the structure as well as those of the forced one. For this purpose the writer developed a new method of calculation of the natural frequencies and modes of a vibrating plane-panel, stiffened by any number of parallel beams, and of the amplitudes of the forced vibration of the same structure under pulsating loads. Our method, described in this paper, is a simple mechanical procedure, with sufficient accuracy making use of formulae similar to those given in the slope-deflecion equations of structural mechanics, under the conditions that the plate edges perpendicular to the stiffeners are supported freely and the other edges left arbitrarily. It is also shown that some other cases under different boundary conditions may be treated in similar manner approximately.
社団法人日本船舶海洋工学会の論文
1947-10-25