Dynamic characteristics of the multilobe journal bearings with the lobes of different geometry

• Autorzy: Strzelecki Stanislaw

Identyfikatory

DOI

10.21008/j.0860-6897.2023.2.25

• Języki publikacji: EN

Abstrakty

EN

Multilobe journal bearings are applied in different types of rotating machines such as, e.g. turbounits. The design of such bearings assures proper load capacity, thermal conditions of oil film and stability of the operation of responsible turbounits. However, the design of these bearings can be changed by application of lobes with different geometries. It allows obtaining new family of the dynamic characteristics. The paper presents the multilobe journal bearings with 2- and 3-lobes characterized by different geometry of lobes. The dynamic characteristics in form of the stiffness and damping coefficients of oil film were obtained by perturbation method. Stability ranges of simple symmetric rotor were determined for considered bearings. The iterative solution of Reynolds, energy and viscosity equations allows the obtaining the oil film forces, which were the basis of the bearing dynamic characteristics. Adiabatic, laminar oil film and the static equilibrium position of journal were assumed.

Słowa kluczowe

EN

multilobe journal bearing; different geometry of lobes; dynamic characteristics

PL

łożysko ślizgowe wielopowierzchniowe; geometria płatów; charakterystyka dynamiczna

• Wydawca: Poznan University of Technology. Institute of Applied Mechanics
• Czasopismo: Vibrations in Physical Systems
• Rocznik: 2023
• Tom: Vol. 34, nr 2
• Strony: art. no. 2023225
• Opis fizyczny: Bibliogr. 13 poz., rys., wykr.

Twórcy

autor

Strzelecki Stanislaw

• https://orcid.org/0000-0001-5030-5249

Bibliografia

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• 3. D. Dettmar, S. Kühl, et al.; Advancement of a radial journal bearing for highest load capacity for big steam turbines for power generation; 7th IFToMM- Conference on Rotor Dynamics, September 25-28, 2006, Vienna, Austria
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• 6. S. Strzelecki; Effect of the sleeve profile on the stability of rotor operating in multilobe journal bearings; Vibrations in Physical Systems, 2016, 27, 339-346
• 7. S. Strzelecki S.; Multilobe journal bearings with the lobes of different geometry; Private investigation; Lodz, Poland, 2018. (unpublished)
• 8. S. Strzelecki; Floating ring journal bearings of multilobe design in turbochargers; In: Book of Abstracts Scientific Automotive Conference, KONMOT, 2018, Poland, 94-396
• 9. E. Kramer; Maschinendynamik; Springer-Verlag, Berlin, 1984
• 10. S. Strzelecki; Static and dynamic characteristics of high-speed multilobe journal bearings; Conference IGTC 2003, Tokyo, Japan, November 2-7, 2003
• 11. S. Strzelecki, Z. Czaplicki; Application of Multilobe Journal Bearings in the Design of Needle Punching Machine; In: Book of Abstracts; 47th Textile Research Symposium, Liberec, Czech Republic; The Textile Machinery Society of Japan TMSJ, 2019, 122-123
• 12. S. Strzelecki, H. Kapusta; Dynamic characteristics and stability of 3-lobe offset journal bearing; Machine Dynamics Problems, 2006, 131-139
• 13. S. Strzelecki, Z. Towarek; Stability of rotor operating in cylindrical 3-pocket journal bearings; Vibrations in Physical Systems, 2010, 24, 385-392

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).