Nonlinear Vibration Analysis for a Jeffcott Rotor with Seal and Air-Film Bearing Excitations

المؤلفون المشاركون

Wang, Yuefang
Wang, Xiaoyan

المصدر

Mathematical Problems in Engineering

العدد

المجلد 2010، العدد 2010 (31 ديسمبر/كانون الأول 2010)، ص ص. 1-14، 14ص.

الناشر

Hindawi Publishing Corporation

تاريخ النشر

2009-11-30

دولة النشر

مصر

عدد الصفحات

14

التخصصات الرئيسية

هندسة مدنية

الملخص EN

The nonlinear coupling vibration and bifurcation of a high-speed centrifugal compressor with a labyrinth seal and two air-film journal bearings are presented in this paper.

The rotary shaft and disk are modeled as a rigid Jeffcott rotor.

Muszynska's model is used to express the seal force with multiple parameters.

For air-film journal bearings, the model proposed by Zhang et al.

is adopted to express unsteady bearing forces.

The Runge-Kutta method is used to numerically determine the vibration responses of the disk center and the bearings.

Bifurcation diagrams for transverse motion of the rotor are presented with parameters of rotation speed and pressure drop of the seal.

Multiple subharmonic, periodic, and quasiperiodic motions are presented with two seal-pressure drops.

The bifurcation characteristics show inherent interactions between forces of the air-film bearings and the seal, presenting more complicated rotor dynamics than the one with either of the forces alone.

Bifurcation diagrams are obtained with parameters of pressure drop and seal length determined for the sake of operation safety.

نمط استشهاد جمعية علماء النفس الأمريكية (APA)

Wang, Yuefang& Wang, Xiaoyan. 2009. Nonlinear Vibration Analysis for a Jeffcott Rotor with Seal and Air-Film Bearing Excitations. Mathematical Problems in Engineering،Vol. 2010, no. 2010, pp.1-14.
https://search.emarefa.net/detail/BIM-488789

نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)

Wang, Yuefang& Wang, Xiaoyan. Nonlinear Vibration Analysis for a Jeffcott Rotor with Seal and Air-Film Bearing Excitations. Mathematical Problems in Engineering No. 2010 (2010), pp.1-14.
https://search.emarefa.net/detail/BIM-488789

نمط استشهاد الجمعية الطبية الأمريكية (AMA)

Wang, Yuefang& Wang, Xiaoyan. Nonlinear Vibration Analysis for a Jeffcott Rotor with Seal and Air-Film Bearing Excitations. Mathematical Problems in Engineering. 2009. Vol. 2010, no. 2010, pp.1-14.
https://search.emarefa.net/detail/BIM-488789

نوع البيانات

مقالات

لغة النص

الإنجليزية

الملاحظات

Includes bibliographical references

رقم السجل

BIM-488789