Compared with single pressurized hull,the multi pressurized hulls are coupled each other through the inboard connection structures.The excited hull transmits vibration to the adjacent structures such as the inboard connection structure/inter-outboard acoustic medium,adjacent pressure hulls,light shells etc.The vibration transmission generally presents a tree structure with multiple paths superimposed each other.In this paper,the finite element model of multi pressurized hulls was established by numerical method.Considering the coupling effect of the multi-body pressurized hull structures,the influence of relevant parameters such as base,excitation position and inboard connection structure on the acoustic characteristics of the multi pressurized hull was analyzed.The control technique of the structure-borne noise of the multi pressurized hull was studied in the viewpoint of vibration transmission path.The results of this study have provided an effective reference for the design and vibration control of multi-body structures.
关键词
振动与波/多耐压壳体/振动传递/数值计算/噪声控制
Key words
vibration and wave/multi pressurized hull/vibration transmission/numerical analysis/vibration and noise control
维普
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