The approach presented in this paper is applicable to calculate the combined plate structures---most of machine parts,such as machine tool bed, box in which the ratio of the size of plate to thickness is not big enough.

• 本文提出的方法适用于计算板尺寸对板厚的比值不是太大的空间平板组合结构。 机器零件，例如机床床身、箱体等多数属于这类结构。