Influence of tire design on safety emergency rescue vehicle movement

Volodumur Kokhanenko

National University of Civil Defenсe of Ukraine

http://orcid.org/0000-0001-5555-5239

Taras Kachur

National University of Civil Defenсe of Ukraine

http://orcid.org/0000-0002-1683-956X

Serhii Ragimov

National University of Civil Defenсe of Ukraine

http://orcid.org/0000-0002-8639-3348

DOI: https://doi.org/10.52363/2524-0226-2021-33-21

Keywords: rescue vehicle, pneumatic tire, diagonal design, breaker edges, temperature distribution, premature decommissioning

Abstract

The issue of improving the safety of rescue vehicles to the place of call at the highest possible speeds is considered. It is well known that modern cars and trucks are equipped with radial design tires with steel cord in the breaker. Their improper operation (driving on a bad road at high speeds, constant tire overload, tire striking the curb, getting the tire into recesses) leads to the detachment of the metal cord in the rubber mass of the tire and the creation of a wavy surface of the sidewall of the tire. Safe operation of tires with such a defect is not possible. The solution to this issue led to the study of the problem of temperature distribution in the elements of a pneumatic tire, as well as to the study of the influence of tire design on the performance and reliability of an emergency vehicle. Experimental dependences of the temperature distribution in various elements of the tire are presented. It was established that the use of steel cord tires on emergency vehicles leads to their premature decommissioning due to fatigue damage at the edges of the belt, and not due to tread wear. Also considered is the problem of increasing the thermal stress in the shoulder area of a pneumatic tire of a radial structure with a metal cord in the breaker associated with the use of a shielding layer. Experimental dependences of the temperature distribution in various elements of the tire with and without a shielding layer are given. It is proposed to increase the safety of rescue vehicles to the place of call at the highest possible speeds to equip them with tires of a special design. The design of tires for rescue vehicles must meet the following requirements: have a diagonal design, do not have a shielding layer, the tread height should be less than that of conventional tires. This will allow the tires to go out of service due to tread wear, and not due to fatigue damage.

References

1. Behnke, R., Kaliske, M. (2015). Termo-mechanically coupled investigation of steady state rolling tires by numerical simulation and experiment // International journal of non-linear mechanics, 68, 101–131. doi:10.1016/j.:ijnonlinmec.2014.06.014
2. Integrated dynamics and efficiency optimizati on for EVs Vehicle dynamics international (2019), 38–39. doi:10.1002/asjc.1686
3. Pozhydayew, S. (2018). Utochnennya ponyattya momentu syly u mekhanitsi [Clarification of the conceht of forse moment in mechanics] Avtoshlyakhovyk Ukrainy. I.P., 21–25. doi:10.30977/AT.2219-8342.2019.44.0.21
4. Wheel slip control for decentralized EVs. Vehicle dynamics international – 2019, 24–26.
5. Larin, O., Vinogradov, S., Kokhanenko, V., Pat. 82321 Ukraine, IPC (2013.01) B60C 23/00. Adjustment for temperature adjustment in pneumatic tires / applicant and patent holder of the National University of Civil Society of Ukraine. № u201302439, application no. 02/26/2013; publ. 07.25.2013, Bul, № 14.
6. Burennikov, Y., Dobrovolsky, A. (2011). Business processes perfection of small motor transport enterprises // Bulletion of the polytechnic institute of Iasi. To-mul LVII (LXI), 2, 237–243. doi:10.1080/00207543.2011.645954
7. Dong-Hyun, Y., Beom-Seon, J., Ki-Ho, Y. (2017). Nonlinear finite element analysis of failure modes and ultimate strength of flexible pipes. Marine Structures, 54, 50–72. doi:10.1016/j.marstruc.2017.03.007
8. Haseeb, A., Jun, T., Fazal, M., Masjuki, H. (2011). Degradation of physical properties of different elastomers upon exposure to palm biodiesel. Energy, 36, 3, 1814–1819. doi:10.1016/j.energy.2010.12.023
9. Cho, J., Yoon, Y. (2016). Large deformation analysis of anisotropic rubber hose along cyclic path by homogenization and path interpolation methods. Journal of Mechanical Science and Technology, 30, 2, 789–795. doi:10.1007/s.12206–016–0134–5
10. Larin, O. (2015). Probabilistic of fatigue damage accumulation in rubberlike materials. Strength of Materials, 47, 6, 849–858. doi:10.1007/s11223–015–9722–3
11. Jacobson B. (2016). Vehicle dynamics. Chalmers University of Technology.