<論文>周期的軸圧縮荷重を受ける複合材料積層円筒殻の動的安定解析(新工学部記念号)

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This paper deals with the problem of dynamic stability of cross-ply laminated cylindrical shells subjectd to periodic axial comperessive loading. First, the axially symmetric motion of the shell is imposed by the periodic axial compressive loading. Subsequently, certain perturbations are supeimposed on this motion, and their behavior sequential with time is investigated. The symmetric state of motion of the shell is considered to be stble if the perturbations remain bounded. The solutions for the prebuckling motion and the perturbated motion are obtained by the use of Galerkin's method. Calculations are carried out for cross-ply laminated cylindrical shells and the instability regions are determined by utilizing Mathieu's equation. Mathieu's equation includes static buckling values, so, we aim at the static buckling value analyzing. The bucking values by Flugge shell theory. These of Mathieu's equation are solved with good accuracy. Regarding the instability mode, we compared the results of Flugge theory with Donnel theory. The inevitability of dynamically unstable behavior is proved analytically and the effects of various factors, such as static buckling pattern, vibrated ampilude and dynamic unstable mode, are clarified.
東海大学の論文
2002-03-31