动力舱段基座至壳体的振动特性研究  

Research on the vibration transfer characteristics from pedestals to shell of power cabin

作　　者：申华[1] 温华兵[1] 陆金铭[1] 程荣[1] 刘甄真 

机构地区：[1]江苏科技大学振动噪声研究所,江苏镇江212003

出　　处：《舰船科学技术》2014年第2期49-54,共6页Ship Science and Technology

基　　金：江苏省自然科学基金资助项目(BK2012278);2012年度江苏省普通高校研究生科研创新计划资助项目(700)

摘　　要：为研究水下航行器动力舱段内不同类型基座至壳体结构的振动传递特性,在动力舱段壳体、舱壁及平台设计了基座A、基座B和基座C。采用有限元仿真预报和实验验证相结合的方法,研究动力舱段壳体的振动模态和基座至壳体表面的振动传递特性。在某型空压机振动源激励条件下,以振级落差为评价指标,预报不同基座刚度参数对壳体表面振动响应的影响,结果表明适当增大基座的刚度可以减小设备振动至壳体的传递,研究结果对动力舱段基座结构的声学设计有参考价值。In order to research on the vibration transfer characteristics of the underwater-vehicle power-cabin shell from different types of base structures, the power cabin was designed, including the pedestal A located on the shell, the pedestal B located at the bulkhead structure and another pedestal C located at the platform structure. The vibration modes of power-cabin shell and the vibration transmission characteristics from pedestals to shell were studied by combining experimental verification and simulation prediction. Taking the vibration level difference as evaluation index, the influence on the shell vibration transmission characteristics from different stiffness parameters of base structures was predicted on the excitation condition of one type of air compressor. The results show that increasing the stiffness of base structures properly can reduce the vibration transmission form equipments to shell, which has the reference value on the acoustic design of the power-cabin base structures.

关 键 词：动力舱段 基座 振动传递特性 振动模态 振级落差 

分 类 号：U661.4[交通运输工程—船舶及航道工程]