軸圧縮を受ける繊維強化積層板の2次座屈現象に関する理論的考察

概要

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Because of their high specific strength and stiffness, fiber-reinforced plastics have been used for structural members in the various fields, so that analysis of thin laminated structure is important. Post-buckling behaviors of thin laminated plate under uniaxial compression have been discussed by many researchers. However, few researches have been performed on the secondary buckling phenomenon for thin laminated plate which occurs with further increase of loading. In this paper, the stability condition of unidirectional fiber-reinforced plates under uniaxial compression which is simply supported along four edges is determined using the second variation of total potential energy. The necessity of secondary buckling is proved analytically and the effects of various factors, such as plate aspect ratio, deflection pattern and average axial shortening are clarified.
東海大学の論文