Dilatant-fluid torsional vibration damper for a four-stroke diesel engine crankshaf

• Autorzy: Kozytskyi Sergiy , Kiriian Sergii

Identyfikatory

DOI

10.2478/pomr-2023-0012

• Języki publikacji: EN

Abstrakty

EN

This paper presents a study of a viscous torsional vibration damper for a crankshaft of a four-stroke diesel engine. The reliable operation of a widely used silicone-type viscous damper depends on the ability of the silicone oil to absorb the energy of torsional vibrations. The non-Newtonian shear flow of the silicone oil interlayer, characterised by a reduction in the shear-rate-dependent viscosity and a moment of the drag forces, negatively affects damping characteristics. A torsional vibration damper, filled with a shear-thickening fluid, was considered and a rheological approach, based on viscosity growth with the shear rate increase, was applied. For such a damper, larger velocity gradients correspond to the higher values of a viscous force, which decreases torsional vibration. The parameter of damper effectiveness (defined by the fluid flow index, values of the damper gaps, torsional vibration amplitude and frequency) was implemented. It has been established that the efficiency of the torsional vibration damper filled with a dilatant fluid does not depend on the damper dimensions and gaps and significantly increases when a shear-thickening fluid is used instead of silicone oil or a Newtonian fluid. At higher values of the flow index, when the non-Newtonian flow becomes distinct, torsional vibrations are damped more effectively. Critical vibration amplitudes at high-velocity gradients, in turn, increase the damping effect as the moment of the drag forces and flow index are power-law related.

Słowa kluczowe

EN

torsional vibration damper; dilatant fluid; non-Newtonian flow; flow index; parameter of effectiveness

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2023
• Tom: nr 1
• Strony: 121--125
• Opis fizyczny: Bibliogra. 19 poz., rys., tab.

Twórcy

autor

Kozytskyi Sergiy

• National University “Odesa Maritime Academy”, Ukraine

• https://orcid.org/0000-0002-1411-1479

autor

Kiriian Sergii

• https://orcid.org/0000-0003-0724-123X

Bibliografia

• 1. L. Murawski, “Vibrations resonance estimation in marine structures”, Journal of KONES Powertrain and Transport. 2014, doi: 10.5604/12314005.1134092.
• 2. W. Homik, “Damping of torsional vibrations of ship engine crankshafts – general selection methods of viscous vibration damper”, Polish Maritime Research. 2011, doi:10.2478/ v10012-011-0016-9.
• 3. W. Homik, “Diagnostic, maintenance and regeneration of torsional vibration dampers for crankshafts of ship diesel engines”, Polish Maritime Research. 2010, doi: 10.2478/ v10012-010-0007-2.
• 4. K Mollenhauer and H. Tschoeke, Handbook of Diesel Engines. Springer, 2010.
• 5. B. Learron, “Essential Heavy-Duty Damper Service”, Engine Professional, vol. 9, pp. 64-72, April-June 2016. [Online]. Available: https://engineprofessional.com. [Accessed Sept. 20, 2022].
• 6. R. Leslie, Synthetics, Mineral Oils, and Bio-Based Lubricants. Taylor & Francis, 2006.
• 7. P. Hodges. Hydraulic fluids. Elsevier, 1996.
• 8. S.V. Kozytskyi and D.D. Polischyk, General Physics (in Ukrainian), Vol. 1. Odesa: Astroprint, 2010.
• 9. S. Kozytskyi and S. Kiriyan, “Maintainability Growth of Marine Diesel Engine Torque Vibration Damper” (in Ukrainian), Ship Power Plants, vol. 30, pp. 146-152, 2012. [Online]. Available: http://seu.onma.edu.ua/archive/ [Accessed Jan. 8, 2023].
• 10. B. Derjaguin, N. Churaev and V. Muler, Surface Forces. Springer, 1987.
• 11. S. Kiriyan and B. Altoiz, “The rheology of motor oils with quasi-liquid crystalline layers in a tribotriad”, Journal of Friction and Wear, vol. 31, pp. 234-239, July 2010.
• 12. T. Feese and Ch. Hill, “Prevention of torsional vibration problems in reciprocating machinery”, 38th Turbomachinery Symposium Proceedings, Turbomachinery Laboratory: Texas A & M University 2009.
• 13. M. Zarei and J. Aalaie, “Application of shear thickening fluids in material development”, Journal of Material Research and Technology. 2020, doi: 10.1016/j.jmrt.2020.07.049.
• 14. F.-Y. Yeh, K.-C. Chang, T.-W. Chen and C.-H. Yu, The dynamic performance of a shear thickening fluid viscous damper”, Journal of the Chinese Institute of Engineers. 2014. doi: 10.1080/02533839.2014.912775.
• 15. R. Larson, The structure and rheology of complex fluids. Oxford University Press, 1999.
• 16. W. Embleton, Reed’s Applied Mechanics for Engineers. Thomas Reed Publications, 1999.
• 17. S.V. Kozytskyi, Theoretical Mechanics (in Ukrainian). Odesa: Astroprint, 2014.
• 18. P. Rodin, “Control of shaft vibrations of marine diesel engines”, Odessa State Maritime Academy, 1992.
• 19. W. Mengsheng, Z. Ruiping and X. Xiang, “The engine silicone-oil damper matching calculation method based on the heat balance”, Research Journal of Applied Sciences, Engineering and Technology, vol. 4, pp. 2773 – 2777, 2012.

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).