It is found that the first vibration mode is vertical by the dynamic analysis and the structural response are in the al...
通过动力分析可以发现，结构的第一振型为竖向振动，动力分析结果也满足抗震要求，说明结构形式是合理可行的。
The results show that the vibration characteristics of the tower in two horizontal directions are slightly distinct, and the damping ratio of the first mode is greater than that of the second mode.
本文分析结果表明，在两水平方向上木塔的振动特性存在些微差异，第一振型阻尼比较第二振型阻尼比大。
WARNING-First mode acoustic vibration is probable.
警告优先方式声波振动是可能的。
The first-order mode and the first eigenfrequency of the pier can be obtained easily and precisely by the impact vibration test method, from which three indexes such as the chang.
利用冲击振动试验法可以准确得到桥墩的一阶振型和一阶频率，利用这两个参数可以构造出一阶振型比、特征参数、一阶曲率模态差三个指标。
The first ten natural frequencies, damping ratios and mode shapes of the dam were measured through steady forced vibration test using multiple vibrators.
用多台起振机进行稳态强迫振动试验，测定了该坝前十阶自振频率、阻尼和振型。
The first ten natural frequencies, damping ratios and mode shapes of the dam were measured through steady forced vibration test using multiple vibrators.
用多台起振机进行稳态强迫振动试验，测定了该坝前十阶自振频率、阻尼和振型。
应用推荐