弹性支撑对多跨梁结构振动特性的影响  

Research on the effect of elastic support on vibration characteristics of multi-span beam structure

作　　者：宋超 赵岩 刘江涛 张航[3] 高聪 SONG Chao;ZHAO Yan;Liu Jiang-tao;ZHANG Hang;GAO Cong(Equipment Project Management Centre of Navy Equipment Department,Beijing 100071,China;China Ship Research and Development Academy,Beijing 100101,China;Harbin Engineering University,Harbin 150001,China)

机构地区：[1]海军装备部装备项目管理中心,北京100071 [2]中国舰船研究院,北京100101 [3]哈尔滨工程大学,黑龙江哈尔滨150001

出　　处：《舰船科学技术》2020年第10期17-22,共6页Ship Science and Technology

基　　金：国家重点研发计划(2016YFC0303406);山东省重点研发计划(2019JZZY010125);中央高校基本科研业务费资助项目(HEUCFD1515,HEUCFM170113);船舶振动噪声重点实验室基金资助项目(6142204190207);中国博士后基金资助项目(2014M552661);国家自然科学基金资助项目(51209052,51679053,51709063);哈尔滨工程大学博士研究生科研创新基金资助项目(HEUGIP201902)。

摘　　要：针对船舶多跨梁结构振动机理揭示不足,基于传递矩阵法开展弹性支撑对多跨梁结构振动特性的影响研究。建立船舶典型多跨梁结构振动分析模型,探究多跨梁结构固有模态和振动传递特性,揭示船舶多跨梁结构振动机理。以弹性支撑多跨梁简化分析船舶加筋板架结构,探究支撑刚度、跨度等对船舶板架结构振动特性的影响规律。研究表明,多跨梁结构的固有频率随支撑跨度和支撑刚度的增大而下降;一定局部支撑刚度下,船舶板架结构振动可简化为多跨梁结构振动,其振动特性与简支梁趋于一致。Aiming at the insufficient disclosure of the vibration mechanism of the ship's multi-span beam structure,the effect of elastic support on the vibration characteristics of the multi-span beam structure was studied based on the transfer matrix method.The vibration analysis model of the typical multi-span beam structure of the ship is established,the inherent modal and vibration transfer characteristics of the multi-span beam structure are explored,and the vibration mechanism of the multi-span beam structure of the ship is revealed;The structure has explored the influence of support stiffness,span,etc.on the vibration characteristics of ship plate frame structure.The research shows that the natural frequency of the multi-span beam structure decreases with the increase of the span and the stiffness;under certain local support stiffness,the vibration of the ship slab structure can be simplified to the vibration of the multi-span beam structure,and its vibration characteristics are similar to those of the simply supported beam.

关 键 词：弹性支撑 多跨梁 传递矩阵法 振动特性 

分 类 号：U661.43[交通运输工程—船舶及航道工程]