Vibration mode coupling
The coupling of vibration modes refers to the vibration input of two vibration modes in one vibration mode (or in a generalized coordinate direction), resulting in a response in another vibration mode (or in another generalized coordinate direction). .
Decoupling is called decoupling. The purpose of decoupling is to make the vibrations in each degree of freedom (that is, each vibration mode) relatively independent or separated, so that measures can be taken independently for the degrees of freedom with poor isolation without affecting the performance in other degrees of freedom. When the respective degrees of independence are independent, the frequency at which resonance may occur is smaller than when there is coupling, especially to ensure decoupling in the direction of large excitation energy.