纵滑工况下不同带束层角度轮胎胎面弹性应变能分析

Analysis of Tire Tread Strain Energy at Different Belt Angles Under Longitudinal Sliding Conditions

采用ABAQUS软件建立225/60R18子午线轮胎有限元模型并进行纵滑试验,分析纵滑工况下不同带束层角度的轮胎胎面弹性应变能变化情况。当滑移率在-20%~20%区间变化时,不同带束层角度下轮胎胎面弹性应变能均呈现出先增后减的变化趋势,并且在滑移率为0时出现凹点;当滑移率为±20%工况时,胎面弹性应变能分布均匀度降低,在接地区域内的应变能峰值超过200 kJ,在65°和67°带束层角度下达到250 kJ,此时胎面易产生横向变形;轮胎路径节点上的弹性应变能变化趋势呈“M”形,当滑移率在-20%~20%范围变化时,弹性应变能变化曲线从“左低右高”向“左高右低”变化;在65°和67°带束层角度下,弹性应变能更加稳定,轮胎更不易出现磨损,车辆行驶安全性更高。

Longitudinal sliding tests were conducted on 225/60R18 radial tires,and a finite element model was established in ABAQUS software for longitudinal sliding simulation.The changes in elastic strain energy in the tread contact area of tires with different belt angles under longitudinal sliding conditions were analyzed.The results show the following:within the slip ratio range of-20%to 20%,the elastic strain energy exhibits an overall trend of first increasing and then decreasing,and a concave point appears when the slip ratio is 0;under the condition of±20%slip ratio,the uniformity of strain energy distribution on the tread decreases,and the peak strain energy in the grounding area exceeds 200 kJ,and reach 250 kJ at belt angles of 65°and 67°,making the tread prone to lateral deformation;the trend of elastic strain energy variation on the path nodes shows an“M”shape,and when the slip ratio changes between-20%and 20%,the curve moves from a low left and high right to a high left and low right;at belt angles of 65°and 67°,the elastic strain energy is more stable,tires are less prone to wear,and vehicle driving safety is higher.