A fuzzy approach for the analysis of rotor-bearing systems with uncertainties

Singiresu S Rao, Yazhao Qiu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

The components of most structural and mechanical systems exhibit considerable variations or uncertainties in their properties and the performance characteristics of such systems are subject to uncertainties. In the case of a rotor bearing system, the nonlinear bearing restoring force is usually represented as a third or fourth power of displacement or as a piecewise linear function of displacement. The coefficients of these models are acquired from experiments and approximations, and will vary considerably during the operation of the bearing. Hence it is more reasonable to treat them as uncertain values. Other bearing parameters such as the inertial properties of concentrated disks, distributed mass and damping of the rotating assemblies are also uncertain due to manufacturing and assembly errors and imprecise operating conditions. It is known that the vibration response of a rotor is highly sensitive to small fluctuations or variations in the bearing parameters. Therefore, any realistic analysis and design of rotor-bearing systems must take the uncertainties into account. In this paper, a methodology is presented for the fuzzy analysis of nonlinear rotor-bearing systems along with numerical results to demonstrate the computational feasibility of the methodology.

Original languageEnglish
Title of host publicationProceedings of the ASME Design Engineering Technical Conference
Pages1033-1044
Number of pages12
Volume1
EditionPARTS A AND B
DOIs
StatePublished - Dec 1 2011
EventASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2011 - Washington, DC, United States
Duration: Aug 28 2011Aug 31 2011

Other

OtherASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2011
CountryUnited States
CityWashington, DC
Period8/28/118/31/11

Fingerprint

Bearings (structural)
Rotor
Rotors
Uncertainty
Biquadrate
Piecewise Linear Function
Methodology
Mechanical Systems
Damping
Rotating
Vibration
Manufacturing
Vary
Fluctuations
Numerical Results

ASJC Scopus subject areas

  • Mechanical Engineering
  • Computer Graphics and Computer-Aided Design
  • Computer Science Applications
  • Modeling and Simulation

Cite this

Rao, S. S., & Qiu, Y. (2011). A fuzzy approach for the analysis of rotor-bearing systems with uncertainties. In Proceedings of the ASME Design Engineering Technical Conference (PARTS A AND B ed., Vol. 1, pp. 1033-1044) https://doi.org/10.1115/DETC2011-48528

A fuzzy approach for the analysis of rotor-bearing systems with uncertainties. / Rao, Singiresu S; Qiu, Yazhao.

Proceedings of the ASME Design Engineering Technical Conference. Vol. 1 PARTS A AND B. ed. 2011. p. 1033-1044.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Rao, SS & Qiu, Y 2011, A fuzzy approach for the analysis of rotor-bearing systems with uncertainties. in Proceedings of the ASME Design Engineering Technical Conference. PARTS A AND B edn, vol. 1, pp. 1033-1044, ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2011, Washington, DC, United States, 8/28/11. https://doi.org/10.1115/DETC2011-48528
Rao SS, Qiu Y. A fuzzy approach for the analysis of rotor-bearing systems with uncertainties. In Proceedings of the ASME Design Engineering Technical Conference. PARTS A AND B ed. Vol. 1. 2011. p. 1033-1044 https://doi.org/10.1115/DETC2011-48528
Rao, Singiresu S ; Qiu, Yazhao. / A fuzzy approach for the analysis of rotor-bearing systems with uncertainties. Proceedings of the ASME Design Engineering Technical Conference. Vol. 1 PARTS A AND B. ed. 2011. pp. 1033-1044
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