摘要
以某船整个推进系统为研究对象,基于有限元方法,建立了推进系统的有限元模型,计算分析了该推进系统固有振动特性,得到其固有频率和固有振型.结果分析表明:该推进系统的模态振型以螺旋桨和艉轴弯曲变形为主,在52.2 r/min的转速下,该推进系统发生共振.这为推进系统的结构优化提供了参考.
The ship propulsion system is investigated in this paper, and the finite element model of the propulsion system is established based on the finite element method to calculate the propulsion system of the natural vi bration characteristics and get its natural frequency and natural shapes. The results show that the main propulsion system mode corresponds to shape deformations of propeller and stern shaft, the propulsion system is on reso nance at 52.2 r/rain. The study provides reference and basis for propulsion system design optimization.
出处
《江苏科技大学学报（自然科学版）》
CAS
2012年第6期572-575,共4页
Journal of Jiangsu University of Science and Technology:Natural Science Edition
关键词
推进系统
有限元法
固有频率
模态分析
propulsion system
finite element method
natural freguenty
modal analysis
