Abstract: To accurately characterize the static force transfer law of tires, this paper proposes a simplified modeling method for the finite element model of the wheel assembly. The Mooney-Rivlin hyperelastic constitutive model is adopted to characterize rubber materials, and the rubber-cord composite material with a complex structure is simulated by a single-layer equivalent orthotropic shell element. Referring to the layout of strain rosette in physical tests, shell elements are arranged at corresponding nodes on the wheel structure surface to extract strain responses, and simulation calculation is carried out by means of the RADIOSS solver. By comparing the simulation and test data at key positions of the wheel, the results show that the model has good prediction accuracy. The strain error of key measuring points is within 8%, and the fitting degree of load-displacement curve exceeds 90%. The research indicates that the model can truly reflect the force transfer characteristics of tires under static load, provide a reliable numerical analysis basis for the research on force transfer performance of aluminum alloy wheels, and has good engineering application value.

Key words: tire; static force transfer; finite element model; RADIOSS

摘要： 为精准表征轮胎静态力传递规律，文章提出一种车轮总成有限元模型简化建模方法。 模型橡胶材料选用 Mooney-Rivlin 超弹性本构表征，结构复杂的橡胶-帘线复合材料采用单层 等效正交各向异性壳单元模拟。参照物理试验应变花实测布置方式，在车轮结构表面对应节 点布设壳单元以提取应变响应，依托 RADIOSS 求解器开展仿真计算。对比车轮关键位置仿 真与试验数据，结果显示模型预测精度良好，关键测点应变误差控制在 8%以内，载荷-位移 曲线拟合度超 90%。研究表明，该模型可真实还原轮胎静态载荷下的传力特征，能够为铝合 金车轮力传递性能研究提供可靠数值分析依据，具备良好工程实用价值。

关键词: 轮胎；静态力传递；有限元模型；RADIOSS