将结构划分成许多子结构,每个子结构可以列出一个刚度矩阵,使这些刚度矩阵按一定规律排列,以便利用高斯消去法的原理,从第一个子结构开始,逐个地消去每一个子结构的未知独立位移量,直至最后一个子结构的前一个子结构。解出剩下的最后一个子结构的独立位移量,然后再返代回去,求出被消去的子结构的独立位移量。这就是 The structure is divided into many sub-structures. Each sub-structure can list a stiffness matrix, and the stiffness matrices are arranged according to a certain rule. In order to use the principle of Gaussian elimination, each sub-structure is eliminated one by one from the first sub-structure. The unknown independent shift amount, up to the previous substructure of the last substructure. Solve the independent displacement of the last remaining substructure, and then go back to find the independent displacement of the substructure that is eliminated. This is