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Whirl characteristics of a flexible liquid-filled rotor under thermal shock

机译:热冲击下柔性液体填充转子的旋转特性

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In this paper, the whirl characteristics of a flexible liquid-filled rotor subjected to thermal shock are investigated. On the basis of the Hamilton principle, the whirl frequency equation of the rotor system is derived. Using Laplace transform, the analytical model of the temperature field of the rotor is obtained. The validity of the developed temperature model is demonstrated by comparing with the finite element results. Then, the thermal axial force exerted on the rotor is calculated and the influence factors are studied. The system stability is analyzed in terms of the whirl frequency equation. The reasonability of the predict model for system stability is verified, and a good agreement can be seen in the comparison of the obtained results based on the presented analytical method with published data. Finally, the critical spinning speed of the rotor system is analyzed, and the effects of some main parameters on system critical speed are investigated.
机译:在本文中,研究了经受热冲击的柔性液体填充转子的旋转特性。在汉密尔顿原理的基础上,导出转子系统的旋转频率方程。使用拉普拉斯变换,获得转子的温度场的分析模型。通过与有限元结果进行比较,证明了开发温度模型的有效性。然后,计算在转子上施加的热轴力,并研究了影响因素。在旋转频率方程方面分析了系统稳定性。验证了系统稳定性的预测模型的合理性,并且可以在基于具有公布数据的呈现的分析方法的基础上的结果的比较中看到良好的协议。最后,分析了转子系统的临界纺纱速度,研究了一些主要参数对系统临界速度的影响。

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