Position acoustic optimization of ribbed cylindrical shell equipment based on spectral element method
The ribbed cylindrical shell is an important structural form of underwater vehicle,which is equipped with a large number of mechanical equipment.The low-frequency vibration generated by the equipment operation is transmitted to the shell through the structure such as the base,causing the shell vibration and low-frequency radiation noise,which seri-ously affects the concealment of underwater vehicleA theoretical calculation method of vibration response of the ribbed cyl-indrical shell based on the spectral element method was established through acoustic optimization design of the installation position of mechanical equipment,and the vibration response of the ribbed cylindrical shell caused by the vibration of equip-ment at different installation positions was obtained.Taking the minimum normal vibration response of a ribbed cylindrical shell as the objective function,an acoustic design method for the position of equipment in a ribbed cylindrical shell was pro-posed.Numerical and experimental results verify the effectiveness of the acoustic optimization method,which is of great sig-nificance for mechanical noise control of underwater vehicles.
spectral element methodribbed cylindrical shelllocation of equipmentoptimization of acoustics
万方数据
维普
