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以导纳方法研究空间桁架或框架结构的振动，建立了适合分析各种边界条件下均匀梁的机械导纳的通用计算方法，然后通过导纳函数求解各结构单元传递或损耗的功率，通过对损耗功率较大的单元来增加结构的阻尼特性．根据导纳分析结果，可以寻找阻尼单元的最优位置，对结构进行局部修改．
The admittance method is used to study the vibration of space truss or frame structure. A general calculation method suitable for analyzing mechanical admittance of uniform beam under various boundary conditions is established. Then, the admittance function is used to solve the power transfer or loss of each unit. Loss of power larger units to increase the damping properties of the structure. According to the results of admittance analysis, we can find the optimal position of the damping unit and modify the structure locally.