轮胎侧向松弛长度测试方法的研究

Study on Test Method of Lateral Relaxation Length of Tire

针对不同规格的轿车子午线轮胎,研究不同测试条件下侧向刚度法和侧偏角阶跃法的侧向松弛长度测试结果。结果表明:侧向刚度法和侧偏角阶跃法得到的侧向松弛长度存在一定差异;小规格205/55R16轮胎在不同充气压力和负荷下的侧向松弛长度基本都小于较大规格225/50ZR17轮胎;两种测试方法得到的侧向松弛长度随充气压力和负荷的变化趋势具有一致性,但不同规格轮胎侧向松弛长度随测试条件的变化趋势有所差异。

The lateral relaxation lengths of the radial tires with different specifications were tested by using the lateral stiffness method and the lateral slip angle step method under different test conditions,and the test results were analyzed and compared.The results showed that the lateral relaxation length obtained by the lateral stiffness method and the lateral slip angle step method was different to a certain extent.The lateral relaxation length of the small size 205/55R16 tire was basically smaller than that of the large size 225/50ZR17 tire under various inflation pressure and load.However,the changing trend of the lateral relaxation length with the variation of the inflation pressure and load obtained by the two test methods was consistent.On the other hand,the changing trend of the lateral relaxation length with the variation of test conditions for the tires with different specifications was different.