The whole stiffness matrix of structural system is derived by condensation approach.
分析了结构运动方程，并采用缩聚法建立结构总侧移刚度。
Because of the similarity of these sub-elements, the coefficients of stiffness for the nodes of the same zone (material) are equal in the whole stiffness field of the structure.
由于子元间的相似性，结构的整体劲度场中同一类型的结点，其劲度系数是相同的。
In finite element analysis, the bandwidth of the whole stiffness matrix is reduced by optimizing the node numbering, thereby the needed memory space is saved and the calculation time is reduced.
在有限元计算过程中，可通过优化节点编号来减少整体刚度矩阵的带宽，从而节约存储空间，减少有限元分析的计算时间。
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