简正振动,正常振动
The frequencies of the normal vibration and spectral entropy of diborane
乙硼烷的简正振动频率和光谱熵
It is proved that if the concentrated mass is small and located at the node or antinode of some mode normal vibration of the nonloaded beam, the frequency has a maximum or minium value as the position of the concentrated mass varies.
理论证明:如果集中质量很小(对梁的质量而言),当集中质量的位置改变,位于无载梁的某次简正振动的节点(腹点),振动频率具有极大(极小)值。
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