Numerical simulation of automotive tires is still a challenging problem due to their complex geometry and structures, as well as the non-uniform loading and operating conditions. Hysteretic loss and rolling resistance are the most crucial features of tire design for engineers. A decoupled numerical model was proposed to predict hysteretic loss and temperature distribution in a tire, however temperature dependent material properties being utilized only during the heat generation analysis stage. Cyclic change of strain energy values was extracted from 3-D deformation analysis, which was further used in a thermal analysis as input to predict temperature distribution and thermal heat generation due to hysteretic loss. This method was compared with the decoupled model where temperature dependence was ignored in both deformation and thermal analysis stages. Deformation analysis results were compared with experimental data available. The proposed method of numerical modeling was quite accurate and results were found to be close to the actual tire behavior. It was shown that one-way-coupled method provides rolling resistance and peak temperature values that are in agreement with experimental values as well.

汽车轮胎的数值模拟由于其复杂的几何形状和结构以及不均匀的载荷和工作条件，仍然是一个具有挑战性的问题。滞后损失和滚动阻力是工程师设计轮胎的最关键特征。提出了一个解耦的数值模型来预测轮胎的滞后损耗和温度分布，但是温度相关的材料特性仅在生热分析阶段被利用。从3-D变形分析中提取应变能值的循环变化，然后将其进一步用作热分析的输入，以预测温度分布和由于滞后损耗而产生的热量。将该方法与解耦模型进行了比较，该模型在变形和热分析阶段都忽略了温度依赖性。将变形分析结果与可用的实验数据进行了比较。所提出的数值建模方法非常准确，发现结果与实际轮胎性能非常接近。结果表明，单向耦合方法提供的滚动阻力和峰值温度值也与实验值一致。