266 曲線状繊維によって強化された複合材積層板の座屈解析

概要

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A new buckling analysis method is proposed here for laminated composite plates with local anisotropy induced by curved reinforcement fibers. The locally anisotropic plate causes non-homogenous stress distribution when it is subjected to in-plane boundary loadings. Thus, an in-plane elasticity problem has to be solved first to determine the in-plane stresses, and these stresses become input to the buckling problem. Both in-plane and buckling problems are solved by using the Ritz method with algebraic polynomial displacement functions. In numerical results, the present results agree well with those from the finite element method, and the present plates with specific curvilinear fibers show higher buckling loads than plates with conventional parallel fibers. Therefore, it is confirmed that the locally anisotropic plates with curvilinear fibers have strong possibility to improve the buckling performance over conventional materials with straight fibers.
2009-08-03