三种升速条件下的鱼雷涡轮机转子系统动力学特性
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Dynamic properties of torpedo turbine rotor system in three speed-up processes
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    摘要:

    为研究鱼雷涡轮机转子系统的瞬态动力学特性,结合实际启动工况,采用传递矩阵法建立了转子系统的瞬态运动方程,并用Newmarkβ数值积分方法进行求解,模拟分析了不同启动过程中转子的瞬态响应历程.结果显示:考虑不同函数形式的(线性、指数、分段)升速过程时,涡轮转子系统各阶临界转速没有显著差异,但共振峰值以及震荡收敛时间差别较大.其中,最符合实际工况的是分段函数形式的升速过程,该过程过二阶临界转速的共振峰值最小.本文的工作可以为鱼雷涡轮转子系统的优化设计提供参考.

    Abstract:

    The transient dynamic characteristics of the torpedo turbine rotor system are predicted and analyzed in this paper. The transient motion equations of the whole rotor system are established based on the transfer matrix method and then solved by Newmark-β numerical integral method. Three different startup processes, including linear, exponent as well as staged accelerations, are involved in the simulation. The numerical results show that the critical speeds of turbine rotor system for three start-up processes are relatively close to each other. However, the peak values and oscillatory convergence time are quite different. The prediction of the staged acceleration process provides the lowest peak value at the second critical rotation rate, which is consistent with the actual situation. This paper provides an essential reference for the further design and optimization of torpedo turbine rotor system.

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宋文,梁跃,伊进宝,郭兆元,白伊明,章蓉.三种升速条件下的鱼雷涡轮机转子系统动力学特性[J].动力学与控制学报,2016,14(3):235~240; Song Wen, Liang Yue, Yi Jinbao, Guo Zhaoyuan, Bai Yiming, Zhang Rong. Dynamic properties of torpedo turbine rotor system in three speed-up processes[J]. Journal of Dynamics and Control,2016,14(3):235-240.

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  • 收稿日期:2014-12-19
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  • 在线发布日期: 2016-05-26
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