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Journal of Vcibration Testing and System Dynamics 2(3) (2018) 271--280 | DOI:10.5890/JVTSD.2018.09.007

Zhong Luo$^{1}$,$^{2}$, YanhuiWei$^{1}$,$^{2}$, Xiaojie Hou$^{1}$,$^{2}$, FeiWang$^{1}$,$^{2}$

$^{1}$ School of Mechanical Engineering & Automation, Northeastern University, Shenyang, China

$^{2}$ Key Laboratory of Vibration and Control of Aero-Propulsion Systems Ministry of Education of China, Northeastern University, Shenyang, Liaoning, China

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Abstract

In allusion to the unbalanced vibration of rotor system, sensitivity analysis and balance method of rotor system were studied. Based on rotor dynamics, combined sensitivity analysis with the balancing methods of three trial weight and modal, a hybrid method was proposed which can be balanced without phase information. Firstly, the model of rotor was established by the finite element method and the correction plane is selected by the sensitivity analysis. Furthermore, the balance speed is determined according to the modal equilibrium theory and the weight calculation is conducted by the balancing method of three trial weight Finally, a dynamic balance experiment was carried out on the rotor model test station. The results of simulation and experiment show that the proposed balance method can not only effectively reduce the residual vibration of rotor, but avoid the blindness of selecting the correction plane and balance speed by the traditional balance method, which is expected to improve the balance efficiency.

Acknowledgments

This work was supported by the National Science Foundation of China under the grant number 11572082; the Fundamental Research Funds for the Central Universities of China under the grant numbers N170308028 and N160312001; and the Excellent Talents Support Program in Institutions of Higher Learning in Liaoning Province of China under the grant number LJQ2015038.

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