中文摘要：

文章将轮胎胎面、胎侧、帘线层、子午带束层等主要部分进行合理简化,为控制轮胎外形及其网格精度对模型求解的影响,对轮胎断面曲线尺寸进行合理计算并重新绘制;建立了由一维梁单元、二维壳单元、三维实体单元组合的子午线轮胎有限元模型。利用LS-DYNA软件模拟分析了轮胎在不同路况下的刚度特性,探讨了有限元模型的单元特性对仿真结果精度的影响,研究了轮胎的非线性材料特性与接触特性对仿真结果的影响,为提高轮胎有限元模型的仿真分析精度,建立了多个仿真模型进行对比分析。通过对轮胎的径向、侧偏刚度等特性的仿真分析及其与试验结果的比较分析,探讨了轮胎有限元建模过程的关键优化技术及提高仿真模型精度的关键问题。

英文摘要：

Reasonable simplification was conducted on the major portions of a vehicle tire model, such as treads, sidewall, steel belts and body plies. Meanwhile, in order to control the influence of geometry and mesh on the solution of the model, the cross section of the tire was recalculated and redrawn. An FEA model of pneumatic radial tire was then established by combining the beams, shells and solid elements. The stiffness characteristics of the tire under different road conditions were analyzed by using LS DYNA software. The effect of the section properties as well as non-linear material and contact features on the simulation accuracy was discussed. The comparative analysis of several models was conducted to improve the accuracy of FEA model. Through the simulation analysis of the tire＇ s radial and cornering stiffness and the comparison with the test results, the critical optimization technologies of the finite element modeling of the tire and the key is- sues to improve the accuracy of the modeling were discussed.