差速器行星齿轮弯曲强度有限元分析

Finite Element Analysis of the Planetary Gear Bending Strength of Differential

以某型400CC全地形车差速器为例,对差速器行星齿轮的三维实体建模方法以及单齿最高啮合点的确定过程进行了阐述,探讨了利用Pro/ENGINEER对差速器行星齿轮三维造型的方法并进行了实体建模,分析了确定单齿最高啮合点的方法,通过非线性有限元软件ABAQUS对行星齿轮单齿的力学性能进行了计算分析,最后与齿轮弯曲强度传统计算方法进行了比较。并能够为齿轮的轻量化设计及疲劳寿命分析提供理论依据。结果表明:行星齿轮弯曲强度满足强度要求,传统计算方法计算结果相对保守。

Taking the differential of a type of 400CC all-terrain vehicle as an example ,the differen- tial planetary gear of the three-dimensional entity modeling methods and the determination process of high- est single tooth meshing point is discussed.The method of using Pro/ENGINEER to build the three-dimen- sional modeling of differential planetary gear has been studied, and the solid modeling of planetary gear has been completed.Then the method of determining the highest meshing point of single tooth has been ana- lyzed, and mechanical property of planetary gear has been analyzed by using the nonlinear finite element software ABAQUS.At last is the comparison of the result with traditional method.The theory basis is provid- ed for the lightweight design of gear and fatigue life analysis.The results showed that,the bending strength of planetary gear satisfies the strength requirement,and the traditional calculation method results are rela- tively conservative.