网孔阻尼型水润滑艉轴承减振特性  

Research on damping characteristics of mesh damping water lubricated stern bearings

作　　者：金勇[1] 邓天扬 欧阳武 刘正林[1] 劳坤胜 何涛[3] JIN Yong;DENG Tianyang;OUYANG Wu;LIU Zhenglin;Lao Kunsheng;HE Tao(Key Laboratory of high performance ship Technology Ministry of Education(Wuhan University of Technology),Wuhan 430063,China;National Engineering Research Center for Water Transport Safety Reliability Engineering Institute,Wuhan 430063,China;Wuhan Second Research Institute of ship design,Wuhan 430063,China)

机构地区：[1]武汉理工大学高性能船舶技术教育部重点实验室,湖北武汉430063 [2]国家水运安全工程技术研究中心可靠性工程研究所,湖北武汉430063 [3]武汉第二船舶设计研究所,湖北武汉430064

出　　处：《哈尔滨工程大学学报》2020年第1期81-86,共6页Journal of Harbin Engineering University

基　　金：国家自然科学基金项目(51579198);高性能船舶技术教育部重点实验室开放基金项目(2016gxnc04)

摘　　要：为了研究水润滑艉轴承的新型结构形式,提高尾轴承的减振降噪性能,本文将多孔吸声结构引入到水润滑橡胶尾轴承设计。基于Ansys有限元分析平台对有无网孔结构的2类水润滑橡胶尾轴承进行了模态和谐响应综合分析,并进行了台架振动测试实验以研究网孔设计参数对尾轴承减振特性的影响规律和水平。仿真和试验结果表明:水润滑橡胶尾轴承底部承载区的轴向网孔设计可以降低轴承固有频率,衰减外部激励的振动能量,且在轴承的承载方向上更为明显。In order to explore the new structural form of the water-lubricated stern bearing,and improve its vibration and noise reduction performance,the porous sound absorption structure was introduced into the design of water-lubricated rubber tail bearing in this paper.Based on finite element analysis platform,Ansys,the modal analysis and harmonic response analysis of two types of water-lubricated rubber stern bearings with or without mesh structure was comprehensively analyzed,and a vibration bench test was conducted to reveal the influence and level of mesh design parameters on the vibration of the stern bearing.The results of simulation and test show that the design of setting up mesh in the axial direction on the bottom bearing area of the water-lubricated rubber stern bearing can reduce the natural frequency of the bearing and attenuate the vibrational energy of external excitation,especially in bearing direction.

关 键 词：网孔阻尼型尾轴承 多孔结构 模态分析 谐响应分析 

分 类 号：U661.44[交通运输工程—船舶及航道工程]