采用有限元法，基于某小水线面双体船设计图纸以及推进电机与柴发机组的安装位置，建立该型船整船有限元模型。对整船进行模态分析，得到其固有特性。以此为基础，分别计算推进电机激励和柴发机组激励下整船的振动传递函数，分析两激励引起船体振动和辐射噪声的差异特性，评估了两激励源单独作用下引起的水下辐射噪声，为该型船动力系统设计与振动噪声控制提供参考。
This article established the finite element model of the SWATH. This model includes propulsion motor, diesel generating set and hull of the ship. Modal analysis was done for the model and the natural frequencies of the ship were obtained. On this basis, the vibration transmission functions of the ship hull caused by the propulsion motor and the diesel generating set were analyzed, radiated noise and the characteristic of the ship vibration caused by these forces were studied. The results can be used as a database for ship propulsion system design and vibration control.
2016,(s1): 65-68,74 收稿日期：2016-07-30
DOI：10.3404/j.issn.1672-7619.2016.S1.011
分类号：U664
作者简介：王家文(1986-),男,硕士研究生,研究方向为振动与噪声控制。
参考文献：
[1] 刘云生, 陈华清, 张宁, 等. 舰船动力系统综合评估指标体系[J]. 船舶工程, 2008, 30(4):32-35.
[2] 敖晨阳, 徐飞, 霍柏琦. 国外舰船柴油机发展现状及趋势[J]. 舰船科学技术, 2013, 35(12):1-4, 16.
[3] 陈新传, 陈华清, 安卫. 舰船用柴油机新技术及发展趋势[J]. 铁道机车车辆, 2003, 23(S1):13-16.
[4] 所俊, 王虹斌, 张文光. 水面舰艇水下辐射噪声权重因子与限值线品质指标研究[C]//第十五届船舶水下噪声学术讨论会论文集. 无锡:中国船舶科学研究中心, 2015:391-398.
[5] 李景湧. 有限元法[M]. 北京:北京邮电大学出版社, 1999.
[6] NILSSON A C, LIU B L. Vibro-acoustics:VolumeⅡ[M]. Beijing:Science Press, 2014.
