The damping characteristic of acoustic senstitive structure is analysed with acoustic theory
hydrodynamics theory and vibration theory.According to the acoustic analysis
the system damping is proportional to the speed of vibrating mass
the permittivity
the surface area of the mass and the frequency of vibration system.When the surface area is the same
the damping coefficient in air is less than the one in liquid
because of the radiation resistance in air is less than in liquid.The acts of the radiation resistance in the acoustic system is equal to damping acts in the vibration system.According to the hydrodynamics theory the equation of damping coefficient is the same style in different situation
and the damping coefficient is concern with medium structure parameter and is proportional to the material sticky coefficient.