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在轮胎结构设计的UG模型中,将轮胎轮廓曲线形状数字化并采用层单元模拟轮胎内部具有正交各向异性等多种材料性质的层状结构,既满足了分析精度,同时也大大节省单元数,提高了分析经济性。并在此基础上建立了30.00R51子午线轮胎的三维非线性有限元模型,通过柔-刚性接触单元成功地模拟了轮胎与刚性地面之间静态接触问题。详细地分析了接地轮胎在垂直载荷、侧向载荷、切向载荷作用下轮胎各种应变的分布情况,计算了轮胎的径向刚度、侧偏刚度、切向刚度。通过实际验证,说明仿真计算结果的可靠性。
In the tire structure design of the UG model, the tire contour curve shape and the use of layer elements to simulate the interior of the tire with orthotropic and other material properties of the layered structure, both to meet the analysis accuracy, but also greatly reduce the number of units , Increased analytical economics. Based on this, a three-dimensional nonlinear finite element model of 30.00R51 radial tire was established. The static contact between tire and rigid ground was successfully simulated by soft-rigid contact element. The distribution of various strains of tire under vertical load, lateral load and tangential load is analyzed in detail. The radial stiffness, lateral stiffness and tangential stiffness of the tire are calculated. The actual verification shows the reliability of the simulation results.