螺旋桨与水下伴流场产生的脉动激振力是潜艇振动的一个重要激励源。潜艇的主要结构是推进轴系与壳体耦合结构，螺旋桨产生的激振力通过轴系经尾轴承、中间轴承及推力轴承作用于艇体激起艇体振动。目前降低轴系引起外壳体的振动有降低螺旋桨的脉动激振力和改善轴系与壳体之间的减震装置2种方法。在降低螺旋桨脉动激振力较困难的情况下，研究激振力经轴系传递到壳体的路径，就对改善减震装置、降低壳体振动有重要意义。
Pulse excitation generated by underwater propeller is an important source of submarine vibration. The main structure of the submarine is thrust system and the hull system. The exciting force generated by the propeller shaft though the bearing to excite the hull submarine. At present, there are two ways to reduce the vibration: reducing pulse excitation of the propeller and improving the damping device between the bearing and the hull. When to reduce the propeller exciting force is difficult, it is important to research the transfer of exciting from thrust system to the hull system
2017,39(7): 65-68 收稿日期：2016-05-04
DOI：10.3404/j.issn.1672-7649.2017.07.013
分类号：TB53;U661.44
作者简介：武星宇(1992-),男,硕士研究生,研究方向为潜艇声隐身技术
参考文献：
[1] 陈发祥, 谌勇, 华宏. 螺旋桨激励力下轴系—艇体耦合系统低频声辐射特征分析[J]. 噪声与振动控制, 2013, 33(6): 143–147.CHEN Fa-xiang, CHEN Yong, HUA Hong-xing. Analysis on the low-frequency acoustic radiation signature of the shaft——hull coupling system under propeller exciting load[J]. Noise and Vibration Contral. 2013, 33(6): 143–147.
[2] 张平, 于全虎. 船舶减震降噪措施简介[J]. 江苏船舶, 2010, 27(3): 1–4.
[3] 冯国平, 谌勇, 黄修长, 等. 舰艇艉部纵向激励传递特性分析[J]. 噪声与振动控制, 2009, 12(6): 132–135.
[4] 谢基榕, 吴有生, 沈顺根. 船舶轴系子系统力传递特性研究[J]. 中国造船, 2011, 52(1): 173–191.XIE Ji-rong, SHEN Shun-gen, WU You-sheng. Transmission character of propeller excitation through shaft-line system to hull[J]. Shipbuilding of China. 2011, 52(1): 80–89.
[5] BROWN M A, SHABANA A A. Application of multibody methodology to rotating shaft problems[J]. Journal of Sound and Vibration, 1997, 204(3): 439–458.
[6] 赵存生, 楼京俊, 何其伟. 艉轴轴承支撑长度对水下结构振动与声辐射的影响[J]. 海军工程大学学报, 2015, 27(6): 11–16.ZHAO Cun-sheng, LOU Jing-jun, HE Qi-wei. Effect of support length of stern to be bearing on vibra-acoustic radiation of underwater structure[J]. Journal of Naval University of Engineering. 2015, 27(4): 11–16.
[7] 王滨. 轴承刚度对船舶轴系振动特性的影响研究[J]. 齐齐哈尔大学学报, 2009, 25(6): 55–60.
[8] 李攀硕, 李栋梁, 张志谊. 轴-壳体系统耦合振动的建模与分析[J]. 振动与冲击, 2012, 31(5): 128–131.
[9] 谢基榕, 徐利刚, 沈顺根, 等. 推进器激励船舶振动辐射声计算方法[J]. 船舶力学, 2011, 15(5): 563–569.XIE Ji-rong, XU Li-gang, SHEN Shun-gen, et al. Calculational method for radiating sound excited by vibration of ship propeller[J]. Shipbuilding of China, 2011, 15(5): 563–569.
[10] 曹贻鹏, 张文平. 轴系纵振对双层圆柱壳体水下声辐射的影响研究[J]. 船舶力学, 2007, 11(2): 293–299.
[11] MSC. Software corporation. MSC. Nastran Reference Manual: U. S. A., 2003[EB/CD].
