Comprehensive assessment of the influence of structural friction in a vehicle suspension on its performance

Authors

DOI:

https://doi.org/10.15587/1729-4061.2021.232536

Keywords:

vehicle, operational properties, smooth movement, adhesion to the support surface, oscillations, suspension, structural friction

Abstract

Decision-making regarding the application of any new structure at the design stage requires in practice that it should be compared with the existing one by many indicators. A special feature of the new design of hydropneumatic suspension is the existence of movable connections (screw and splined) as parts of the hydropneumatic element. The presence of structural friction in movable connections requires, in particular, an assessment of the impact of this friction on the process of oscillations when moving through crossed terrain based on comparative analysis. The comprehensive estimate chosen for comparison includes operational properties in terms of ergonomics (smooth movement) and adhesion to the support surface (effort in the contact of wheels with the support surface).

The results of a theoretical study involving a vehicle with parameters (weight, dimensions) close to armored personnel carriers BTR70, BTR80, but with hydropneumatic suspensions, demonstrated that when driving on crossed terrain with speeds up to 65 km/h there is a significant reserve in terms of ergonomics. Regardless of the presence (absence) of structural friction, at friction coefficients of up to 0.085. When moving on the surface with large irregularities, the reserve for the maximum allowable (3 g) acceleration in a driver seat is 4.708 times (there is no structural friction) and 3.768 times (structural friction is present). When moving on the surface with small irregularities, the reserve for the maximum permissible (0.5 g) acceleration in a driver seat is 2.093 times (there is no structural friction) and 2.616 times (structural friction is present).

Under the most dangerous modes of movement (at the highest speeds) when driving over small irregularities, the presence of structural friction has a positive effect both in terms of ergonomics and stability. Thus, when driving at a speed of 65.679 km/h, the minimum clutch margin is 1.4 times greater, and the acceleration is 1.249 times smaller

Author Biography

Valeriy Pisarev, National Academy of the National Guard of Ukraine

Doctor of Technical Sciences, Professor

Department of Armored Vehicles

References

  1. Hog, E., Arora, Ya. (1983). Prikladnoe optimal'noe proektirovanie: Mekhanicheskie sistemy i konstruktsii. Moscow: Mir, 478.
  2. Pisarev, V. P., Yurchuk, Yu. M. (2005). Udoskonalennia khodovykh yakostei boiovykh mashyn. Zbirnyk naukovykh prats Akademiyi vnutrishnikh viysk MVS Ukrainy, 1-2 (5-6), 30–32.
  3. Avramov, V. P., Kaleychev, N. B. (1989). Dinamika gusenichnoy mashiny pri ustanovivshemsya dvizhenii po nerovnostyam. Kharkiv: Vischa shk. Izd-vo pri Khark. un-te, 112.
  4. Pisariev, V. P. (2011). Mozhlyvosti transportnoho zasobu z halmuvannia za vidsutnosti proboiu pidvisky. Vestnik NTU «KhPI», 56, 29–33.
  5. Pisarev, V. Р. (2018). Working process bу machine movement аt cosography with evaluation of possibility of division and transmission in dynamics. Zbirnyk naukovykh prats Natsionalnoi akademiyi Natsionalnoi hvardiyi Ukrainy, 1 (31), 10–18.
  6. Pisarev, V. P. (2015). Assessment of the stability of motion combat wheeled vehicle when turning in a transient and static cut. The collection of scientific works of the National Academy of the National Guard of Ukraine, 2 (26), 15–26.
  7. Pisarev, V. (2019). Determining the parameters for connections among the elements of design of vehicles in terms of ergonomics and crew safety. Eastern-European Journal of Enterprise Technologies, 3 (7 (99)), 72–80. doi: https://doi.org/10.15587/1729-4061.2019.169944
  8. Novikov, V. V., Pozdeev, A. V., Diakov, A. S. (2015). Research and Testing Complex for Analysis of Vehicle Suspension Units. Procedia Engineering, 129, 465–470. doi: https://doi.org/10.1016/j.proeng.2015.12.153
  9. Novikov, V. V., Pozdeev, A. V., Chumakov, D. A., Kovalev, A. M. (2017). Combined operation of pneumatic spring of automobile vehicle with wheel dynamic absorber and hydraulic absorber. Vestnik mashinostroeniya, 7, 34–39. Available at: https://www.elibrary.ru/item.asp?id=30309324
  10. Novikov, V. V., Pozdeev, A. V., Chumakov, D. A., Golyatkin, I. A. (2015). Vibrozaschitnye svoystva pnevmaticheskoy podveski s dinamicheskim gasitelem kolebaniy koles i suhim treniem. Oboronnaya tekhnika, 9-10, 102–106. Available at: https://www.elibrary.ru/item.asp?id=42813055
  11. Chumakov, D. A., Chernyshov, K. V., Novikov, V. V., Diakov, A. S., Suchenina, A. S. (2019). Mathematical model of motor vehicle air suspension with a combined damping system. Journal of Physics: Conference Series, 1177, 012049. doi: https://doi.org/10.1088/1742-6596/1177/1/012049
  12. Ryabov, I. M., Chernyshov, K. V., Pozdeev, A. V. (2017). Vibroprotective and Energetic Properties of Vehicle Suspension with Pendular Damping in a Single-Mass Oscillating System. Procedia Engineering, 206, 519–526. doi: https://doi.org/10.1016/j.proeng.2017.10.510
  13. Farkas, Z., Bartels, G., Unger, T., Wolf, D. E. (2003). Frictional Coupling between Sliding and Spinning Motion. Physical Review Letters, 90 (24). doi: https://doi.org/10.1103/physrevlett.90.248302
  14. Haussler, F. W., Wonka, A. (1959). Zur Berechnung des Stick - slip – Vorganges. Maschinenbautechnik, 8 (1), 45–53.
  15. Kemper, J. D. (1965). Torsional instability from frictional oscillations. Journal of the Franklin Institute, 279 (4), 254–267. doi: https://doi.org/10.1016/0016-0032(65)90338-8

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Published

2021-06-10

How to Cite

Pisarev, V. (2021). Comprehensive assessment of the influence of structural friction in a vehicle suspension on its performance . Eastern-European Journal of Enterprise Technologies, 3(1 (111), 29–36. https://doi.org/10.15587/1729-4061.2021.232536

Issue

Vol. 3 No. 1 (111) (2021): Engineering technological systems

Section

Engineering technological systems

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Copyright (c) 2021 Валерий Петрович Писарев

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