کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
615097 | 1454845 | 2013 | 10 صفحه PDF | دانلود رایگان |
Frictional behaviour of tyres on snow is important for vehicles. We made friction tests of rubber tread blocks, of different geometries and rubber formulations, on compacted artificial snow in a cold room using a linear tribometer. These tests show excellent agreement with outdoor vehicle tests. The friction coefficient (μ) for rubber decreases with increasing velocity because of a water layer formed by frictional heating. As glass transition temperature Tg of the rubber decreases μ increases, which correlates with the increased compliance of the rubber. At higher velocities siped tread-blocks show higher friction than blocks without sipes because of ploughing.
► Comprehensive laboratory study of rubber friction on snow that is relevant for tyres.
► Excellent agreement between outdoor car tests and indoor tribometer tests.
► Intriguing behaviour found for siped tread block geometry – we explain why.
Journal: Tribology International - Volume 59, March 2013, Pages 292–301