hysteresis damping

In physics, damping is the process of restraining vibratory motion by dissipating energy. Hysteresis damping, also known as structural damping, is a type of mechanical damping that occurs within the material itself. It arises from energy losses during the repetitive internal deformation and restoration of a material's shape.1

This energy dissipation, often in the form of heat, is due to the material's hysteresis properties. When a material undergoes cyclic stress, its magnetic or mechanical response lags behind the applied force, creating a hysteresis loop. The area within this loop represents the energy lost as heat. This phenomenon is utilized in hysteresis motors, where the rotor's magnetic material is cyclically magnetized, producing torque.234