扁平化对子午线轮胎稳态温度场影响的有限元分析

Finite element analysis of influence of aspect ratio on steady temperature distribution in radial tires

以195/60R14半钢子午线轮胎为参考轮胎,用简化的方法建立了不同扁平率的有限元模型.这一简化方法的特点是单一改变断面宽度并通过选择合适的同一下沉量来保持负荷系数基本不变.根据解耦的方法计算得到了保持固定下沉量时不同扁平率轮胎的能量损耗和稳态温度场.结果表明,不同扁平率轮胎的胎肩部均为截面上温度最高的区域;随着扁平率的降低,胎肩、胎冠部的温度有明显的下降,但胎侧、胎圈部的温度几乎没有变化.

Based on 195/60R14 passenger car radial （PCR） tire, the finite element models with different aspect ratios were constructed using a simplified method. The key of the method is to keep the load coefficient constant for different aspect ratios. According to the uncoupling idea, the energy loss and steady temperature distribution in the tires with different aspect ratios were calculated for the fixed vertical displacement. Numerical results show that the highest temperatures always appear in the shoulder regions of the tires with different aspect ratios. For the fixed vertical displacement, the temperature in tire shoulder and crown decreases obviously with the decrease of the aspect ratio, while the temperature in tire bead and side hardly changes.