Vibrational couplings and energy transfer pathways of water's bending mode Nature Communications Combination Bands, Overtones and Fermi Resonances Chemistry LibreTexts COUPLING TYPES 4 1 Definition Couplings are mechanical components used to connect two rotating shafts for transmitting power and torque. They are designed to compensate for misalignment, absorb vibration, and reduce shock Roles and Types of Shaft Couplings Roles and Types of Shaft Couplings Vibronic coupling Vibrational + electronic