许兆棠. 直升机传动系统扭转振动的分析[J]. 工程力学, 2012, 29(9): 330-336. DOI: 10.6052/j.issn.1000-4750.2010.12.0931
引用本文: 许兆棠. 直升机传动系统扭转振动的分析[J]. 工程力学, 2012, 29(9): 330-336. DOI: 10.6052/j.issn.1000-4750.2010.12.0931
XU Zhao-tang. TORSIONAL VIBRATION ANALYSIS FOR A HELICOPTER TRANSMISSION SYSTEM[J]. Engineering Mechanics, 2012, 29(9): 330-336. DOI: 10.6052/j.issn.1000-4750.2010.12.0931
Citation: XU Zhao-tang. TORSIONAL VIBRATION ANALYSIS FOR A HELICOPTER TRANSMISSION SYSTEM[J]. Engineering Mechanics, 2012, 29(9): 330-336. DOI: 10.6052/j.issn.1000-4750.2010.12.0931

直升机传动系统扭转振动的分析

TORSIONAL VIBRATION ANALYSIS FOR A HELICOPTER TRANSMISSION SYSTEM

  • 摘要: 为了获得直升机传动系统扭转振动的特性,对直升机传动系统的扭转振动进行了计算和分析.在简化传动系统结构的基础上,将直升机传动系统划分为若干个轴段和圆盘的子系统,根据振型叠加原理,得到了直升机传动系统扭转振动的解,分析了传动系统的扭转频响函数.结果表明:传动系统扭转频响函数幅值的峰值出现在低阶固有频率附近;不同频率激振源的部件引起传动系统同阶扭转共振时,发动机的转速不等,发动机到激振源部件的传动比大,发动机的转速高;在同阶扭转共振中,桨叶引起传动系统扭转共振时,发动机的转速最高.

     

    Abstract: In order to obtain the characteristics of the torsional vibration of a helicopter transmission system, a calculation of the torsional vibration is carried out. The transmission system is divided into the subsystems of shaft segment and disks, based on a simplified structure of the transmission system. The solution of the torsional vibration can be obtained using the modal superposition method. The torsional frequency response function of a helicopter transmission system is analyzed. The result shows that there is the extreme value of amplitude of a torsional frequency response function near low order torsional nature frequencies. When the same order torsional resonance is produced in a helicopter transmission system by excitation parts with different frequencies, the rotation speed of an engine is unequal. The larger transmission ratio from an engine to excitation parts is, the higher rotation speed of an engine is. When torsional resonance of a transmission system is caused by a rotor, the rotation speed of an engine is the largest in the same order torsional resonance.

     

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