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选取恰当的屈曲形函数,利用瑞利-里兹法求得了边界为转动或扭转加劲肋约束的正交各向异性板在平面剪切和轴向压缩作用下的局部屈曲解析解.给出了各种截面形式FRP复合材料型材相邻板件之间约束刚度的近似表达式,并将求得的解应用到型材腹板的局部屈曲分析中;将求得的解析解和有限元解进行对比,结果吻合良好.扩展了正交各向异性简支板和固支板受到均匀压力和均匀剪力作用的相互作用方程.
The appropriate buckling function is selected, and the local buckling analytical solution of the orthotropic plate with the boundary constrained by rotating or torsional stiffeners under plane shear and axial compression is obtained by Rayleigh-Leitz method. The approximate expressions of the restraining stiffness between the adjacent plates of FRP composite profiles with various cross sections are applied to the local buckling analysis of profile webs. The analytical solutions obtained are compared with the finite element solutions The results agree well with each other, and the equations of interaction between the orthotropic support and the support plate under uniform pressure and uniform shear force are expanded.