基于SEA的船舶螺旋桨横振传递路径分析及降噪研究
发布时间：2018-08-11 15:53
【摘要】：采用统计能量分析(SEA)对某船螺旋桨轴横振在舱室中产生的噪声进行了仿真,在图论框架下将SEA系统等效为赋权有向图,求解中高频振动能量传到舱室的主要传递路径。使用偏离算法从赋权图中得到了500条传递权重最大的路径,从而确定螺旋桨振动传递到主机舱和集控室的主要路径。分析结果显示,螺旋桨横振激励主要通过二层甲板与横舱壁的耦合传递到船首方向的舱室产生噪声,双层底和船壳对振动传递影响较小。在传递路径结构和耦合连接处采取降噪措施可使集控室的噪声在各频段降低3 d B。
[Abstract]:The noise generated by transverse vibration of a ship's propeller shaft in a cabin is simulated by statistical energy analysis (SEA). The SEA system is equivalent to a weighted directed graph under the framework of graph theory to solve the main transmission path of vibration energy from mid-high frequency to the cabin. The deviation algorithm is used to obtain 500 paths with the largest transfer weight from the weighted graph, so as to determine the main path from the propeller vibration to the main engine cabin and the centralized control room. The results show that the transverse vibration of propeller is mainly transmitted to the hatchroom in the bow direction by coupling of the two deck and the transverse bulkhead. The effect of double bottom and hull on the vibration transfer is small. The noise reduction in the transmission path structure and coupling connection can reduce the noise of the central control room by 3 dB in each frequency band.
【作者单位】： 大连海事大学轮机工程学院;大连测控技术研究所;
【分类号】：U664.33
本文编号：2177457
[Abstract]:The noise generated by transverse vibration of a ship's propeller shaft in a cabin is simulated by statistical energy analysis (SEA). The SEA system is equivalent to a weighted directed graph under the framework of graph theory to solve the main transmission path of vibration energy from mid-high frequency to the cabin. The deviation algorithm is used to obtain 500 paths with the largest transfer weight from the weighted graph, so as to determine the main path from the propeller vibration to the main engine cabin and the centralized control room. The results show that the transverse vibration of propeller is mainly transmitted to the hatchroom in the bow direction by coupling of the two deck and the transverse bulkhead. The effect of double bottom and hull on the vibration transfer is small. The noise reduction in the transmission path structure and coupling connection can reduce the noise of the central control room by 3 dB in each frequency band.
【作者单位】： 大连海事大学轮机工程学院;大连测控技术研究所;
【分类号】：U664.33
【相似文献】
相关期刊论文 前2条
1 冯国平;黄修长;刘兴天;张志谊;华宏星;;基于振动功率流的船艉传递路径分析[J];噪声与振动控制;2010年02期
2 ;[J];;年期
，本文编号：2177457
本文链接：https://www.wllwen.com/kejilunwen/chuanbolw/2177457.html
