如何避免圆边和模态面板厚厚的黑边？
How to avoid rounded edges and thick black border of modal panel?
并利用时域最小二乘法和复模圆法对实验数据进行了三维的模态参数和振型分析。
Modal parameters and vibration type were obtained by the method of least squares time domain, complex modal analysis and the experimental data.
由导纳圆拟合法识别出了桥梁的模态参数。
The latter identified the modal parameters of the bridge by admittance circle fitting method.
在此基础上，介绍了由频响数据识别复模态参数的导纳圆拟合法。
On this basis, the mobility circle fitting method for identifying the complex modal parameters from frequency response data is discussed.
对一圆柱薄壳在静止状态和高速旋转状态下进行了模态试验。
The experimental modal analyses have been done under static condition and high-speed rotating condition for a given thin cylindrical shell by using shock vibration excitation method.
结果表明：（1）圆板的模态声辐射效率在全频段内大体呈现随着振动频率的增高而增大的特点；
The results show that (1) the modal radiation efficiency increases with the increasing of the frequency in the whole frequency range;
结果表明：（1）圆板的模态声辐射效率在全频段内大体呈现随着振动频率的增高而增大的特点；
The results show that (1) the modal radiation efficiency increases with the increasing of the frequency in the whole frequency range;
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