Abstract
Mechanical noise is an important part of underwater-radiated noise of naval vessels. With the increasing power of mechanical equipment, the running noise of equipment cannot be ignored. Noise control of ship machinery is mainly carried out in two aspects. One is to control the noise source, and the other is to control the propagation path. The application of vibration isolation device is one of the important measures to control the transmission of mechanical noise. The corresponding natural frequency and mode are obtained through modal analysis, the deformation, impact and other aspects of the vibration isolator are checked, and the stress and strain response of the system under the action of disturbing force is obtained through harmonic response analysis, and the double layer vibration isolation device is tested.
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