货车车轮结构强度分析

STRUCTURE STRENGTH ANALYSIS OF TRUCK WHEEL

为了准确而可靠地评估货车车轮的结构强度,建立车轮的有限元模型,用人工划分和自动划分相结合的方法将车轮划分成六面体单元模型,对模型施加约束和载荷,求解出von Mises应力和最大剪应力,分别用von Mises准则与Tresca准则对车轮进行应力分析,有效地确定车轮结构危险点,并对计算结果的数值稳定性进行分析。对车轮静态弯曲实验的测点进行实验应力分析(包括von Mises应力和最大剪应力),验证有限元分析结果,并分析实验误差的产生原因。结果表明,采用六面体单元的线性有限元分析方法,能准确确定车轮结构危险点,具有很好的数值稳定性,适用于对货车车轮进行结构强度分析。

The finite element（FE） model of a truck wheel was established in order to accurately and reliably evaluate its structure strength.The hexahedral meshes of the wheel were generated by using the combining method of defining mesh generation and automatic mesh generation in FE method.The special constraints and multiple loads were imposed on the model with the meshes.The von Mises stress distribution and maximum shear stress distribution were obtained.von Mises criterion and Tresca criterion can be respectively used to effectively determine the critical points in wheel structure,and the numerical stability of the calculated results was analyzed.The finite element analysis results（von Mises stress and maximum shear stress） were proved by making the experimental stress analysis on the measuring points in static bending test of wheel,and the possible reasons of the experimental errors were stated.The analysis results show that the linear hexahedral finite element method can accurately determine the critical points in wheel structure,possesses the good numerical stability,and the analysis method is suitable for the structure strength analysis of truck wheel.