衝撃静水圧力を受けるアングルプライ積層円筒殻の動的安定性に及ぼす構造減衰の影響

概要

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This paper deals with the dynamic stability of composite laminated cylindrical shells under impact hydrostatic pressure. First, the motion of cylindrical shells under impact hydrostatic pressure is defined as axially symmetric motion. Following this definition, certain perturbations are superimposed on this motion, and their effect on the behavior of a shell is investigated. The symmetric state of motion of the shell is stable if the perturbations remain bounded. The solutions for the prebuckling motion and perturbed motion are obtained by Galerkin's method. Stable regions are determined using Mathieu's equation. The inevitability of dynamically unstable behavior is proved analytically, and the effects of various factors, such as structural damping, hydrostatic pressure ratio, lamination angle and the dynamic unstable mode, are clarified.
東海大学の論文