面内受扭固支环板的塑性屈曲

Plastic buckling of clamped annular plates subjected to in plane torsional moments

用平衡路径分叉分析的方法分析了固支环板在面内扭矩作用下的塑性屈曲问题．在分析中考虑了由夹紧环板边缘所引起的径向压应力和环向压应力对屈曲临界扭矩的影响．结果表明，这种径向应力和环向应力的存在会使临界扭矩大幅度下降。

Plastic buckling of clamped annular plates subjected to in plane torsional moments is analysed by analysing the bifurcation of equilibrium. In the analysis, the effect of radial and circumferential stresses induced by clamping the annular plates on the critical buckling loads is taken into account. The results show that the critical torsional moments are substantially lowered because of the presence of the induced stresses and that the J 2 flow theory predictions for the buckling loads can be in agreement with the experimental results.