Title: Optimization of sound radiation from submarine composite cylindrical shell based on genetic algorithm
Abstract: In order to reduce the vibration and noise of submarines,a FEM model of composite laminated cylindrical shell is established.The model is used for the investigation into its underwater vibration and sound radiation.Based on the genetic algorithm(GA),the structural-acoustical optimization model is presented,with the angle of laminated layers as design variable and the maximum sound pressure on the coupled interface as an object of optimization.The result shows that the optimizing design of the angle of the composite laminated cylindrical shell can improve its sound radiation effectively,compared with the symmetrical laminated angle.The optimized far-field pressure level reduces3.6dB on average in the frequency band of 50 Hz to 300 Hz.Therefore,this optical design can provide a certain reference for further study of the optimization of sound radiation from a large complex underwater structure.
Publication Year: 2014
Publication Date: 2014-01-01
Language: en
Type: article
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