重庆大学 机械传动国家重点实验室，重庆 400044
郑传威（1999—），男，硕士研究生，主要从事航空齿轮传动系统设计开发，(E-mail)1582488018@qq.com。
宋朝省，男，教授，博士生导师，(E-mail)chaoshengsong@cqu.edu.cn。
TH133.2
重庆市杰出青年科学基金资助项目（CSTB2022NSCQ-JQX0026）。
State Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing 400044, P. R. China
Supported by Chongqing Funds for Distinguished Young Youths(CSTB2022NSCQ-JQX0026).
针对某型航空高速长轴转子系统振动问题，考虑不同轴承支撑形式和轴承阻尼，建立了高速长轴转子系统计算模型，基于Ansys Workbench研究了轴承支撑形式与轴承阻尼对临界转速的影响规律。系统在刚性支撑时的临界转速远高于柔性支撑时的临界转速；系统在同为刚性支撑下，考虑轴承阻尼时，临界转速随着阻尼的增大而减小，而随着阶次越高，轴承阻尼对临界转速的影响也逐渐减小。此外，系统在不同位置处的谐响应情况基本一致；系统响应幅值随着不平衡量增大而增大；系统响应幅值随着阻尼增大均呈现增大的趋势。
This study addresses the vibration problems in high-speed long-shaft rotor system of an aerial UAV by developing a computational model that incorporates various forms of bearing support and damping. Using Ansys Workbench, the effects of bearing support forms and bearing damping on the critical speed of the rotor system are analyzed. Results indicate that the critical speed is significantly higher with rigid support than with flexible support. When rigid support is combined with bearing damping, the critical speed decreases with the increase of damping, and the influence of bearing damping decreases in higher-order modes. Additionally, the harmonic responses of the system are consistent across different positions, with the response amplitude increasing as the unbalanced load rises. Furthermore, the response amplitude shows an upward trend with increased damping.
郑传威,宋朝省,吴安阳,王耀禄.航空无人机高速长轴转子系统动力学分析[J].重庆大学学报,2025,48(1):1-9.
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