Affiliation:
1. Department of Mechanical Engineering
School of Engineering of São Carlos
University of São Paulo
Trabalhador São-Carlense 400
13566-590 São Carlos, Brazil e-mail:
Abstract
This work presents an optimization procedure to find bearing profiles that improve stability margins of rotor-bearing systems. The profile is defined by control points and cubic splines. Stability margins are estimated using bearing dynamic coefficients, and obtained solutions are analyzed as a function of the number of control points and of the Sommerfeld number at optimization. Results show the feasibility of finding shapes for the bearing that significantly improve the stability margins. Some of the obtained solutions overcome the stability margins of conventional bearings, such as the journal bearing and preloaded bearings with 0.5 and 0.67 preload. A time domain simulation of a flexible shaft rotating system supported by such bearings corroborates the results.
Subject
Surfaces, Coatings and Films,Surfaces and Interfaces,Mechanical Engineering,Mechanics of Materials
Reference20 articles.
1. On the Optimization of Fluid Film Bearings;Proc. R. Soc. London, Ser. A,1976
2. Optimization of Self-Acting Gas Bearings for Maximum Static Stiffness;J. Appl. Mech.,1990
3. On the Optimum Groove Geometry for Herringbone Grooved Journal Bearings;J. Tribol.,2006
4. Optimization of Grooved Geometry for Thrust Air Bearing to Maximize Bearing Stiffness;J. Tribol.,2008
5. Optimum Design of Short Journal Bearings by Enhanced Artificial Life Optimization Algorithm;Tribol. Int.,2005
Cited by
8 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献