Time frequency features of rotor systems with slowly varying mass

Issue title: 2nd International Conference on Vibro-Impact Systems (ICoVIS), Sanya, China, 6–9 January, 2010

Article type: Research Article

Authors: Yu, Tao | Han, Qingkai

Affiliations: School of Electromechanical Automobile Engineering, Yantai University, Yantai, 264005, China | School of Mechanical Engineering and Automation, Northeastern University, Shenyang, 110004, China

Note: [] Corresponding author. E-mail: yt_126@126.com

Abstract: With the analytic method and numerical method respectively, the asymptotic solutions and finite element model of rotor system with single slowly varying mass is obtained to investigate the time frequency features of such rotor system; furthermore, with given model of slowly varying mass, the rotor system with dual slowly varying mass is studied. For the first order approximate solution is used, there exists difference between the results with analytic method and numerical method. On the base of common characteristics of rotor system with dual slowly varying mass, the general rules and formula describing the frequency distribution of rotor system with multiple slowly varying mass are proposed.

Keywords: Rotor system, slowly varying mass, FEM, analytic method, reassigned Morlet scalograms

DOI: 10.3233/SAV-2010-0585

Journal: Shock and Vibration, vol. 18, no. 1-2, pp. 29-44, 2011