靜的ならびに衝撃的水圧力の作用を受ける薄肉円筒殻の水中振動について : 第II報, 数値的検討

概要

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A thin elastic shell in form of a circular cylinder is assumed to have small initial deformation. The shell is assumed to suffer the following loads in succession : (a) At a state of static equilibrium, it is under the action of a normal pressure q_1,together with an axial thrust P. (b) During the period 0<t<t_0,the shell is suddenly acted on by an additional normal pressure q_2. (c) At time t_0<t onwards, the pressure q_2 cases to act, and the static pressure q_1 only acts upon the shell.In Part I of this report, the author has shown a theoretical formula which gives the amount of deformation (vibratory) of the shell at three stages (a), (b) and (c) as mentioned above. In this Part II, the author takes up a special case of a shell whose diam. is equal to 10m, the thickness 6cm, and the length 15m. The numerical values concerning the deformation of this specific shell is obtained, based on theoretical formula as mentioned above.