复合材料层合梁的屈曲

本文在铁摩辛柯梁理论基础上,利用迭合刚度方法及Hamilton原理建立了层合梁屈曲问题控制方程,并用此控制方程求解了在具体边界条件下层合梁的屈曲问题,得出了无论在什么边界条件下层合梁的最小屈曲载荷不会大于等效剪切刚度系数C的结论.

BUCKLING OF COMPOSITE LAMINATED BEAMS

Based on the theory of Timoshenko's beam, the governing equations of buckling of laminated beam are established by using the method of laminating stiffness and Hamilton's principle. These governing equations are applied to solve buckling problems of simple-supported and elamped-clamped beam. The numerical results presented in this paper are satisfactory. The conclusions are obtained that the buckling loads of beams are always smaller than the effective shear stiffness C in despite of the boundary conditions of beams.