This paper takes a type gas turbine rotor as an example to analyze its natural frequency and modal shape.
介绍了某型燃气轮机转子模态试验，试验测得转子静态固有频率和模态振型。
The practice application expresses that effective modal mass could be helpful to find natural frequency and vibration shape.
应用表明用有效模态质量进行模态识别，可以有助于找到尾轴架系统的固有频率和振型。
With the reduction of natural frequency stiffness and transformation of modal shape structure, the corresponding of the structure can also be changed.
刚度的减小自然伴随结构自然频率的减小和结构模态振型的转变，相应结构的动力响应也会出现转变。
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