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Wyświetlanie 1-2 z 2
Tytuł:
The effects of vehicle load on driving characteristics
Autorzy:
Rievaj, Vladimir
Vrábel, Ján
Synák, František
Bartuška, Ladislav
Powiązania:
https://bibliotekanauki.pl/articles/102297.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
gravity center of vehicle
road curve radius
speed at passage
directional deviation
vehicle stability
środek ciężkości pojazdu
promień łuku drogowego
prędkość w przejściu
odchylenie kierunkowe
stabilność pojazdu
Opis:
Many traffic accidents are due to an incorrect assessment of the current situation by the driver of the vehicle. With correct assessment of the situation, the driver has also to take into account a number of other factors. This article focuses on some of these factors such as the vehicle load, vehicle speed and curve radius. The first part of the article deals with the position of the vehicle center of gravity (CG), which has a major impact on the driving characteritics of the vehicle. The paper demonstrates the calculation of the maximum speed of a car model and truck model (without load and with load) when cornering. The center of gravity has an effect on the vehicle axles load distribution, and thereby on braking forces. This issue is dealt with in the second part of the paper. In the last part the calculation of the braking force as a function of the adhesion coefficient of the tires depending on the road surface is mentioned. The importance of the contribution consists in quantifying the impact of vehicle load on its driving characteristics.
Źródło:
Advances in Science and Technology. Research Journal; 2018, 12, 1; 142-149
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preparation of Twinned Dendrites of Al-Zn Alloy with High Zn Content
Autorzy:
Gao, K.
Song, W.
Fan, L.
Ding, Y.
Guo, X.
Zhang, R.
Powiązania:
https://bibliotekanauki.pl/articles/351396.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
directional solidification
twinned dendrite
microstructure
growth orientation
deviation angle
Opis:
Twinned dendrites in Al-Zn alloy with high Zn content (40% wt.%) were successfully prepared by directional solidification. At different directional solidification rates (1000 and 1500 μm/s), microstructures and growth orientation variations of Al twinned dendrite and non-twinned dendrite were characterized. By using the inverted trapezoidal graphite sleeve at 1000 μm/s, Al twinned dendrite were formed to developed feather crystal structures in longitudinal section. Its primary and secondary twinned dendrite were grew along [110] direction. Moreover the deviation angle between [110] direction of Al twinned dendrite and the heat flow direction was about 27.15°. While not using the inverted trapezoidal graphite sleeve at 1000 and 1500 μm/s, Al dendrite was the non-twinned dendrite and the twinned dendrite was not appeared. The experimental results showed that the higher temperature gradient, a certain pulling rate and convection environment were the formation conditions of twinned dendrites.
Źródło:
Archives of Metallurgy and Materials; 2018, 63, 4; 1657-1662
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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