纵振动对声传输测量带来的干扰及其避免方法  

Effect of longitudinal vibration of fluid-filled pipe with elastic wall on sound transmission character

作　　者：董鹏[1] 陈志刚[2] 龚强[2] 芦雪松[3] 

机构地区：[1]海军装备部,北京100071 [2]中国舰船研究设计中心,湖北武汉430064 [3]哈尔滨工程大学水声工程学院,黑龙江哈尔滨150001

出　　处：《中国舰船研究》2017年第1期116-121,共6页Chinese Journal of Ship Research

摘　　要：弹性充液管道在一端固定,另一端受到谐和力作用时自身会产生稳态纵振动。相比于管道自身模态的谐振,弹性管道稳态纵振动的幅度更大,对于声场的影响也更大。对于管道稳态纵振动的研究可以更好地说明充液管道对管口辐射声场的影响。通过等效梁模型的解析计算及与实验结果的对比,验证了等效梁模型用于计算管道稳态纵振动的正确性,同时,提出一种用于隔离管道纵振动的方法,并通过实验验证了其有效性。When one end of a fluid-filled pipe with an elastic wall is fixed and a harmonic force effect acts on the other end, a steady longitudinal vibration will be produced. Compared to the pipeline resonance mode, the amplitude of the steady longitudinal vibration of an elastic pipe is greater, and the effect on the sound is also greater. The study of the steady longitudinal vibration of pipes can better describe the effects of fluid-filled pipelines on the radiation sound field of the pipe opening. Through the contrast between the analysis calculation of the equivalent beam model and the experimental results, the accuracy of the equivalent beam model for the calculation of the steady longitudinal vibration of pipelines is verified, and a method of isolating the steady longitudinal vibration state is proposed and verified.

关 键 词：弹性充液管道 声传输特性 稳态纵振动 

分 类 号：U661.44[交通运输工程—船舶及航道工程]