By using CAD software, the influence of mass and spring constant on system natural frequencies and mode shapes is discussed respectively.
本文首先导出了该系统频率和振型的分析表达式，并利用计算机辅助设计软件，分别讨论了质块质量及弹簧常数对系统频率的影响。
The identified natural frequencies and mode shapes are found satisfying via a comparison with those obtained by finite element computation.
经与有限元计算结果比较后可知，所识别的全桥气弹模型固有频率和振型结果令人满意。
The dynamic transfer matrix can be used for calculation of exact natural frequencies and mode shapes for asymmetrical thin-walled beams and its assemblages.
动态传递矩阵可以用于计算非对称薄壁梁及其集合体的精确固有频率和模态形状。
Basically, there are characteristics that depend on the weight and stiffness of my structure which determine where these natural frequencies and mode shapes will exist.
从根本上讲，这些特性依赖于结构的质量和刚度，它决定了固有频率和模态振型何处存在。
Mechanical model of the drill carriage with rotation and vibrating hammer for the new type taphole drill is established. The natural frequencies and mode shapes of the model are calculated.
建立了新型开铁口机电动钻冲机构的力学模型，计算了它的固有频率和主振型。
The derived dynamic transfer matrix can be used for calculation of the exact natural frequencies and mode shapes for thin-walled beams and structures approximated as composed of thin-walled beams.
动态传递矩阵可以用于计算薄壁梁集合体的精确固有频率和模态形状。
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。
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