Refined assessment of tire rolling resistance in the starting mode
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Дата
2022
Назва журналу
Номер ISSN
Назва тому
Видавець
Харківський національний автомобільно-дорожній університет
Анотація
Rolling resistance is one of the most important operational characteristics of a car tire. First of all, the fuel consumption, durability and service life of the tire depend on the rolling resistance. Of course, the higher the rolling resistance, the faster and more intensively the tire will wear out. Also, car braking parameters, such as deceleration and, accordingly, the braking distance, may indirectly depend on the rolling resistance characteristics. In turn, rolling resistance is influenced by the properties of the tire itself, as well as the condition of the road surface and weather conditions. It is especially important to evaluate the operational characteristics of a car tire in the starting period of movement, because at this time the behaviour of the tire is unpredictable. Goal. The purpose of this work is to improve the methodology for evaluating the rolling resistance of a car tire in the starting period of movement. Knowing how the rolling resistance changes during the starting movement, it is possible to evaluate the operational properties of the car. Methodology. Refined assessment is carried
out with the help of dependencies obtained in previous scientific works. But in order for the result of the
rolling resistance assessment to be correct, it is necessary to determine the necessary characteristics of
the tire. Namely, we are talking about the characteristics of radial stiffness. In the work, these
characteristics are determined both by conducting experimental studies and by using FEM. Results.
Thanks to the conducted research, significant results were obtained on the change in rolling resistance
during the starting motion. It was established that with an increase in internal pressure from 0.17 MPa
to 0.225 MPa, as a result of the starting motion, the rolling resistance decreases by approximately
20-25%. Originality. From the analysis of the literature, it can be concluded that in most of the studied
works, the peculiarities of the interaction of automobile tires with the supporting surface in the starting
period are not taken into account during various studies. It can be said that the originality of this work,
on the one hand, is that the rolling resistance is investigated during the starting motion, and on the other
hand, that its assessment is carried out both on the basis of the results of experimental studies and with
the help of FEM. Practical value. In this work, it is possible to highlight the obtained results, thanks to
which we can estimate the rolling resistance of a car tire with sufficient accuracy. The methods of
determining the operational characteristics of a car tire, presented in the work, can be used during its
operation and at the design stage.
Опис
Ключові слова
automobile tire, starting period, rolling resistance, experimental research, finite element method, refined assessment, stabilization, safety, автомобільна шина, стартовий період, опір коченню, експериментальні дослідження, метод скінченних елементів, уточнена оцінка, стабілізація, безпека
Бібліографічний опис
Karpenko, V. Refined assessment of tire rolling resistance in the starting mode / V. Karpenko, Е. Neskreba // Автомобiльний транспорт : зб. наук. пр. / М-во освiти i науки України, ХНАДУ ; редкол.: А. В. Гнатов (гол. ред.) та iн. – Харкiв, 2022. – Вип. 51. – С. 5–13.