The complex stiffness method is adopted to carry out the analysis of surface damping treatment for the support of life winch of a certain typed helicopter.
采用复刚度法对某型直升机救生绞车支架进行表面阻尼处理的分析。
Using traditional method to solve strength and stiffness problem with drive shaft under complex loads features boring and arduous calculation work.
用传统方法求解有复杂载荷作用的传动轴的强度与刚度，需要十分繁重的计算工作量。
The complex modal analysis method is generalized to the cases in which stiffness matrix may be singular and mass matrix, damping matrix and stiffness may be nonsymmetric.
把复模态分析法推广到刚度矩阵可以奇导且质量矩阵、阻尼矩阵和刚度矩阵均不必为对称的情形。
The stiffness of the connection joint which connect different parts of a complex structure can be extracted by identification method.
由若干部件经一定的连接部件组成的复杂结构系统，其连接部件的连接刚度可通过参数识别的方法来提取。
Base on the practical data, the virtual structure, which has equivalent stiffness, is built by using inverse problem method. It can substitute the complex structure model in practice.
以实测数据为依据，采用反问题解法构造了与实际结构刚度相当的虚拟结构模型，代替了复杂的实际结构模型。
Base on the practical data, the virtual structure, which has equivalent stiffness, is built by using inverse problem method. It can substitute the complex structure model in practice.
以实测数据为依据，采用反问题解法构造了与实际结构刚度相当的虚拟结构模型，代替了复杂的实际结构模型。
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