【作者】 强磊； 唐建生； 李兵； 路通；

【Author】 QIANG Lei;TANG Jian-sheng;LI Bing;LU Tong;School of Mechanical Engineering,Xi’an Jiaotong University;Science and Technology on Underwater Acoustic Antagonizing Laboratory;

【机构】 西安交通大学机械学院； 水声对抗技术重点实验室；

【摘要】 水下结构受到重复性的瞬态激励而向水下辐射声信号,是一种常见的水下结构发声方式,通过对其发声特性的分析,深入认识不同影响因素对发声特性的影响,对抑制水下结构在重复性瞬态激励下的发声有重要意义。本文利用ANSYS有限元分析软件,在分析结构的模态振型和固有频率的基础上,结合重复性敲击激励下的瞬态振动响应仿真分析与对应的声场分析,给出了水下结构在重复性瞬态激励下的发声特性。更多还原

【Abstract】 Underwater structures radiate the underwater acoustic signals in repetitive transient excitation,which is a common sound way of underwater structures.By analyzing the acoustic characteristics and studying the impact of different factors on the acoustic characteristics,which is important for suppressing the sound of underwater structures in repetitive transient excitation.In this paper,the mode shapes and natural frequencies of the underwater structure gong are analyzed,the simulation analysis of transient vibration response of the underwater structures in repetitive transient excitation is combined with the corresponding sound field analysis by using finite element analysis software.Then,the acoustic characteristics of underwater structures in repetitive transient excitation are given.更多还原