Vibration modes of the rotor system of turbocharger with floating-ring bearing

Journal of Vibroengineering

Chenxia Zhang¹  Lei Hou²  Huibin Li³  Yue Zhang³ 

[1] BAIC Motor Corporation Ltd., Beijing, 101300, China;FAW Haima Automobile Company Ltd., Haikou, 570216, China;School of Mechanical Engineering, Beijing Institute of Technology,Beijing, 100081, China;

关键词: floating-ring bearing;    natural modes;    turbocharger;    rotor system;    FEM;    modal test;   

DOI  :  10.21595/jve.2016.16581

来源: DOAJ

【 摘 要 】

In this paper, in order to investigate the natural modes of the rotor system of turbocharger, the analytical model of floating-ring bearing, the FEM and modal test technology were employed. Firstly, based on Reynolds equations of the dynamic oil layer of floating-ring bearing, the oil layer pressure was obtained by using the finite difference algorithm. Then the stiffness coefficients and damping coefficients were calculated by using integration method. Next the FEM model of rotor system with supporting stiffness of floating-ring bearings was established. Then the natural modes of rotor system were simulated with considering the oil layer stiffness of the floating-ring bearings and the rotor’s rotating speeds. Lastly, the natural modes were identified with modal test technology and furthermore the FEM calculation results were verified. The investigation shows that the oil layer stiffness of the floating-ring bearings and rotating speeds of the rotor have great influences on vibration modes of the rotor system.

【 授权许可】

Unknown