固有振动频率;自振频率
With analysis of professional software DASP, natural vibration frequency ( period)、 vibration mode and damping ratio of model structure with not sealing top and sealing top are obtained, and then analyze the the change rule of the dynamic characteristics after the two tests. 3.
利用专业软件DASP分析试验结果,得到模型结构在未封顶、封顶两种情况下的自振频率(周期)、振型和阻尼比,进而分析出两次试验后动力特性的变化规律。
Theoretical mode analysis is made by establishing the dimensional dynamic infinite element model of BeiDa Bridge with Midas software, thus natural vibration frequency and mode shape of BeiDa Bridge theoretically are concluded.
利用Midas软件建立了北大桥的空间动力有限元模型,并进行了理论上的模态分析,得到了该桥理论上的自振频率与振型。
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