冰面和干燥路面上轮胎侧偏特性的试验研究

EXPERIMENTAL STUDY OFCORNERING PROEPRTIES OF A TIREON AN ICY AND A DRY PAVEMENT

采用自行研制开发的平台往复式轮胎力学静特性试验机,研究了两条规格和胶料性能相同但胎面花纹不同的子午线轮胎在干燥路面和冰面上的侧偏特性,并进行了对比分析。重点讨论了冰面温度、轮胎负荷、轮胎气压和胎面花纹等因素对侧偏特性的影响规律。结果表明:低温冰面上轮胎的侧偏特性与干燥路面上的轮胎相似,但胎面花纹对冰面轮胎的侧偏特性产生更明显影响;在允许范围内适当降低气压有利于轮胎的操纵稳定性。

The test rig for tire traction on icy and snowy pavements is developed based on the existing static tire test rig for dry pavement. The cornering behavior of two pieces of radial tires with the same type and the same tread compounds but different tread patterns is investigated on the above two test rigs. Discussions are focused on the effects of ice surface temperature, normal load, inflation pressure and tire tread patterns on cornering behavior of a tire on ice and on dry pavements. The results showed that the tendencies of tire cornering force varied with slip angle on cold ice are similar to that of a tire on dry pavement, and different tread patterns can affect the cornering behavior of a tire, especially for a tire on ice. It is suggested that lowering inflation pressure to the accepted extent will be benefit for controllability and stability of an automotive.