Influnce of Support Stiffness on Free Vibration and Force Transmission Rate of Helicopter Driveshaft

摘要：

　　Bending vibration of helicopter driveshaft is a main source causing damage of bearing supports and noise of transmission system.Firstly, we get driveshaft element stiffness matrices and mass matrices based on the finite element theory.Then, we get calculate matrix eigenvalue of the entire system.Finally, we get natural frequencies and natural modes of different bearing system.Mass eccentricity is one of the main excitation sources of the transmission system vibration and noise.This excitation is transmitted to base by bending vibration of drive shaft, causing body vibration and noise.As transmission rate changes with different bearing stiffness of supports, it can be employed to reflect influence from bearing stiffness of supports on bending vibration of axis.Transmission rate can be used as input parameters (motivation) or goal parameters to reflect the performance ofdriveshaft vibration.

关键词： Model analysis Driveshaft Vibration Force transmission rate Numerical method

作者: Huanjun Wang Dawei Yu Yongwei Yue Chao Wang

作者单位: HARBIN ENGINEERING UNIVERSITY.College of Shipbuilding Engineering.China ZHUZHOU TIMES NUE MATERAL TECHNOLOGY CO.LED.Technology Center.China

会议类型: 国际会议

会议名称: the 2012 International Conference on Vibration, Structural Engineering and Measurement (2012年振动、结构工程与测量国际会议(ICVSEM2012))

会议地点: 上海

会议语种:英文

页码: 39-43

在线出版日期: 2012-10-19（万方平台首次上网日期，不代表论文的发表时间）