The natural frequency, damping ratio and modeshape of a multi-degree-of-freedom system are analyzed and the identified results are in good agreement with the theoretical values.
并针对一多自由度系统具体论述了固有频率、阻尼比和振型的识别方法，识别结果与理论结果吻合较好。
2
Natural vibration characteristic of gun tube was analyzed triumphantly. Vibration frequency and modeshape were obtained.
对某火炮身管固有振动特性进行了分析，计算得到了振动频率和振型。
3
Therefore, through structural modal analysis with different damage degree using ANSYS, get natural frequencies and modeshape data as neural network input vector after unitary.