Coupled Modes

Coupled modes are modes of vibration that are not independent but which influence one another because of energy transfer from one mode to the other. Coupling occurs for example when the centre of mass of a beam does not coincide with the centre of shear. The beam cannot then have a mode of vibration in which it bends without twisting. The bending and torsion modes of the beam are said to be coupled.

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Subjects: Noise & Vibration