衝撃負荷を受けるアングルプライ積層円筒殻の動的応答

概要

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Advanced fiber-reinforced laminated composite materials have been used for structural members, because of their high specific strength and stiffness. This paper deals with the problem of dynamic stability of laminated cylindrical shells subjected to axial step loading. First, the axially symmetric motion of the shell under the loading is determined. Subsequently, certain perturbations are superimposed on this motion, and their behavior in time is investigated. The symmetric state of motion of the shell is called stable if the perturbations remain bounded. The solutions for the prebuckling motion and the perturbated motion are obtained by the use of Galerkin method. The cases of dynamically applied constant axial loading are also discussed. The inevitability of dynamically unstable behaviors is proved analytically and the effects of various factors, such as compressive load ratio, lamination angle, dynamic unstable mode and dimension of cylinder are clarified.
東海大学の論文