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The impact of the kinematic parameters of bounce and pitch motions of sprung mass on wheeled vehicles handling

Lyashuk О., Sokil M., Vovk Y., Tson O., Dzyura V.

Zeszyty Naukowe. Transport / Politechnika Śląska

2017

z. 97

81--91

The impact of the kinematic parameters of bounce and pitch motions of wheeled vehicles’ (WVs’) sprung mass (SM) with non-linear power characteristics of the cushion system on vehicles handling is studied. The dependence of the critical value of the dynamic steering angle of directive wheels on the amplitude of bounce and pitch motions and the kinematic parameters of motion is developed. It is proven that the limit value of the dynamic steering angle of directive wheels is reduced during acceleration, and vice versa (it increases during braking, while the bounce and pitch motions are significantly reduced).

Ways of improvement of the city road network functioning

Dzyura V.

Journal of Sustainable Development of Transport and Logistics

2016

Vol. 1, No. 1

11--15

According to analysis of the diagram an hour-long traffic vehicles intensity determined the directions of improvement functioning of the road network of the city, by redistribution of traffic streams on sections of the road network by optimization traffic light cycles. Traffic lights cycles proposed to distribute by analyzing the distribution laws of traffic streams at crossroads during the day. By analyzing of statistical data for characteristics determination of distribution proposed to use a small sample theory that provides to get a reliable data in a short period of time. Evaluation of the effectiveness of implementation proposed measures is realizing by Student and Fisher criterions.