船舶轴系是推进系统中的重要部分，其运转的可靠性和稳定性都直接影响到船舶的运行。本文以典型轴系试验台架为研究对象，建立轴系有限元模型，考虑纵摇环境下，船舶主机的隔振对轴系产生的附加激励，对轴系进行了瞬态响应分析。结果表明，纵摇环境下，轴承负荷受主机垂直方向隔振刚度影响最大，而在进行总体设计时，应综合考虑隔振刚度对轴系振动和主机隔振效果的影响。
Marine shafting is a vital part of propulsion system. Ship normal running is directly influenced by its reliability and stability. A typical marine shafting test bench was investigated in this paper. A finite element model of the shafting was established based on FEM. Transient response analysis was carried out considering additional excitation caused by main engine vibration isolation under ship pitching. The computation results indicate that bearing loads are mainly affected by main engine vibration isolator's vertical stiffness. When in system design, the impact of vibration isolator's stiffness to shafting vibration and isolation effect should be considered synthetically.
2019,41(2): 80-84 收稿日期：2018-03-19
DOI：10.3404/j.issn.1672-7649.2019.02.016
分类号：U664.2
作者简介：张智鹏(1990-),男,硕士,助理工程师,研究方向为船舶振动噪声测试与分析
参考文献：
[1] 陈之炎. 船舶推进轴系振动[M]. 上海:上海交通大学出版社, 1987.
[2] 徐伟, 李桐桥. 推进电机新型隔振装置设计研究[J]. 舰船科学技术, 2006, 28(2):86-88 XU W, LI T Q. Design study of a new mounting system for marine propulsion electrical machine[J]. Ship Science and Technology, 2006, 28(2):86-88
[3] 郭全丽, 祝长生, 邓轶. 主机隔振器刚度对船舶推进轴系冲击特性的影响[J]. 中国舰船研究, 2008, 3(3):38-41 GUO Q L, ZHU C S, DENG Y. Effects of the stiffness of vibration isolators on anti-shock dynamics for propulsion shafting of ship[J]. Chinese Journal of Ship Research, 2008, 3(3):38-41
[4] 王永远.船舶动力系统隔振技术研究[D]. 武汉:武汉理工大学, 2008.
[5] 张亚洲.船舶推进装置-气囊隔振系统校中特性研究[D]. 西安:西安科技大学, 2013.
[6] 卜文俊, 何琳, 施亮. 船舶推进装置气囊隔振系统对中可控性问题研究[J]. 振动与冲击, 2015, 34(5):56-60 BU W J, HE L, SHI L. Alignment controllability of air spring vibration isolation system of a ship propulsion plant[J]. Journal of Vibration and Shock, 2015, 34(5):56-60. (in Chinese)
[7] ARVID Naess. A second-order theory for the response statistics of wave induced ship hull vibrations in random seas[J]. Maritime Structures, 1996, 9:389-408
[8] J. JUNCHER JENSEN Wave-induced ship hull vibrations in stochastic seaways[J]. Maritime Structures, 1996, 9:353-387
[9] ALOK K. Jha. Nonlinear stochastic models for ocean wave load and responses of offshore structures and vessels[D]. USA:Stanford University, 1997.
[10] 刘树鹏.舰船纵横倾作用下转子轴承系统动力学特性研究[D]. 哈尔滨:哈尔滨工业大学, 2011.
