%0 Journal Article
%T 螺旋桨弹性对推进轴系纵向振动特性影响研究<br>Impact of Propeller Elasticity on Longitudinal Vibration Characteristics of Propulsion Shafting
%A 楼京俊
%A 张阳阳
%A 朱石坚
%J 机械科学与技术
%D 2017
%X 针对当前研究中多数模型未考虑螺旋桨弹性的问题，建立梁-弹簧振子构成的简化螺旋桨模型，分析螺旋桨不同简化方式对轴系纵向振动计算结果的影响，并进一步研究螺旋桨伞状模态频率与轴系纵振模态频率的关系对轴系纵振的影响。结果表明：螺旋桨伞状模态在轴系纵向振动中有明显体现；螺旋桨一阶伞状模态主要影响轴系前两阶纵向振动频率处的振动峰值；螺旋桨二阶伞状模态主要影响轴系第二阶纵向振动频率处的振动峰值；螺旋桨二阶伞状模态频率与轴系反共振频率接近时，能有效降低推力轴承处的振动功率流。<br>Most existing studies did not consider the elasticity of propeller. A simplified model of propeller composed of beam and spring oscillator is constructed. The impact of different simplified modes of propeller on the longitudinal vibration of propulsion shafting is analyzed and the impact of the relationship between umbrella modes frequency of propeller and longitudinal vibration modal frequency of shafting is studied. The results show that the umbrella modes of propeller have distinct embodiment in longitudinal vibration of shafting. The first umbrella modal frequency of propeller has an important impact on the shafting vibration of the first two longitudinal modal frequencies. The second umbrella modal frequency of propeller can obviously affect the shafting vibration of the second longitudinal modal frequency. The vibration power flow of thrust bearing base will be reduced when the second umbrella modal frequency of propeller is close to the anti-resonance frequency of shafting
%K 伞状模态
%K 纵向振动
%K 力传递率
%K 功率流
%K 伞状模态
%K 纵向振动
%K 力传递率
%K 功率流&lt
%K br&gt
%K umbrella mode
%K longitudinal vibration
%K force transmissibility
%K power flow
%K umbrella mode
%K longitudinal vibration
%K force transmissibility
%K power flow
%U http://journals.nwpu.edu.cn/jxkxyjs/CN/abstract/abstract6860.shtml