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给出了一种子结构综合法，该方法适用于具有弹性连接件的复杂结构。根据“模型修正”思想，基于完备模态空间，利用结构部件（子结构）模态试验结果，对子结构有限元计算模型进行修正，然后通过子结构对接界面间的广义耦合力集合各子结构运动方程而成为总系统方程，最后求解线性代数方程组，数值计算结果和模态试验数据对比表明，这种半试验半理论方法在工程上非常有意义。
A substructure synthesis method is given, which is suitable for the complicated structures with elastic joints. According to the idea of “model amending”, based on the complete modal space, the finite element model of sub-structure is modified by using modal test results of structural components (substructures), and then the substructures are assembled by the generalized coupling forces between interfaces. Equation of motion, and then become the total system equation. Finally, the linear algebraic equations are solved. The comparison between numerical calculation and modal test data shows that this semi-experimental and semi-theoretical method is very meaningful in engineering.