In this thesis theoretical solution of inhomogeneous polar orthotropic plate was deduced and plate with clamped edges was taken as example . the displacement in radius direction , inner - force in radius direction , inner - force in annulus direction and buckling load with different core - radius ratio were worked out . the effect of core - radius ratio to the result was discussed in the conclusion 本文从理论上推导出了非均匀极正交各向异性圆板的精确解，并且以夹支圆板作为算例，计算了在不同核径比的情况下，圆板受外部纵向均布载荷作用后的径向位移、径向内力、环向内力，以及屈曲载荷，讨论了核径比对计算结果的影响。
The sea1 ring with complex section shape cafl be treated as a combined body made of several individual cy1 inders with di fferent dimensions . by app1ying the method used in the " edge prob1 em " of the fnoment theory of she11 , the deformat ion - - - radia1 disp1acement and rotation at the two edges of each individual 应用壳体力矩理论中求解边缘问题的方法，将密封环分解为多个等厚度、截面为单一矩形的筒体，对每一圆筒进行分析并运用壳体力矩理论求出其两个边缘在外载荷作用下的边缘变形值? ?径向位移及转角。
