Study on Temperature Rise Characteristic of Engineering Vehicle Retreaded Tires
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摘要: 为了进一步明确工程车辆翻新轮胎的温升特性，利用Creo及ANSYS Workbench软件构建了计算机几何模型及有限元分析模型，确定了稳态温度场有限元分析的边界条件，构建了工程车辆翻新轮胎滚动工况稳态温度场测试系统，获得了胎面层、缓冲层、带束层、胎体层、胎侧层、趾口胶层沿轮胎宽度方向及径向方向的温度场分布特性和热通量分布特性。仿真及试验结果均表明：胎体层胎肩两侧温度最高，带束层、缓冲层及胎面层宽度方向两侧温度最低；翻新轮胎内部温度随着车速的增加而逐渐升高，其中缓冲层和胎面层的温度增大幅度较大，胎体层次之，带束层的温度增大幅度最小；胎体层在靠近胎肩部位热通量最大，带束层和胎面层宽度方向两侧部位热通量最大，缓冲层宽度方向两侧部位热通量最大，胎侧层与胎体层交界处热通量最大，趾口胶层与胎体层交界处热通量最大，钢丝圈中间部位热通量最大。Abstract: In order to further clarify the temperature rise characteristic of engineering vehicle retreaded tire, the geometry model and the finite element analysis model of retreaded tire were built using Creo and ANSYS Workbench software, the boundary conditions of steady state temperature field was determined, then the steady-state temperature field test system for the rolling working condition of engineering vehicle retreaded tire was constructed, and at last the temperature field distribution characteristics and heat flux distribution characteristics of the tire layer, buffer layer, belt layer, tread body layer, tire side layer and toe mouth rubber layer along the width direction and radial direction of the tire were obtained. The simulation and test results show that:the two sides of the tread body layer shoulder has the highest temperature, with the lowest temperature on the belt layer, buffer layer, and both sides along the width direction of tread body layer. The interior temperature of the refurbished tire increased with the speed of vehicle, among them, the temperature of the buffer layer and the tire layer increased greatly, and the tread body layer is the second, and the temperature of the belt layer is the smallest. The maximum heat flux is near the shoulder position of the tread body layer, and the heat flux of belt layer and on both sides of tire layer width direction is the largest, the maximum heat flux is on both sides of the buffer layer width direction, the maximum heat flux is at the junction of the tire side layer and the tread body layer, the maximum heat flux is at the junction of the toe mouth rubber layer and the tread body layer, and the heat flux in the middle part of the wire ring is the largest.
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表 2 不同车速下各层之间表面传热系数
车速/(km·h-1) 10 20 30 40 50 60 hw/(W·(m2·℃)-1) 15.22 27.25 38.30 48.77 58.82 68.56 hn/(W·(m2·℃)-1) 10.65 19.08 26.81 34.14 41.17 47.99 hc/(W·(m2·℃)-1) 10.65 19.08 26.81 34.14 41.17 47.99 hq/(W·(m2·℃)-1) 6.09 10.90 15.32 19.51 23.53 27.42 注:hw为胎面外侧传热系数; hn为胎体内腔传热系数; hc为胎侧传热系数; hq为钢丝圈传热系数。 
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表 3 不同车速下测取的胎压和计算的内腔温度
车速/(km·h-1) 胎压/kPa 内腔温度/℃ 10 465 30 20 498 51 30 534 75 40 565 95 50 572 99 60 584 107
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表 4 不同车速下的稳定胎压
车速/(km·h-1) 运行时间/h 初始胎压/kPa 稳定胎压/kPa 10 2 600 615 20 2 600 648 30 2 600 684 40 2 600 715 50 2 600 748 60 2 600 783
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表 5 不同车速下各层稳态温度值
车速/
(km·h-1)测量点a
温度/℃测量点b
温度/℃测量点c
温度/℃测量点d
温度/℃10 89.2 81.3 69.3 56.9 20 90.5 81.1 70.7 58.5 30 91.3 82.9 72.1 60.5 40 92.3 83.9 72.9 60.1 50 92.5 85.4 73.9 63.8 60 92.6 86.6 76.0 64.7
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