万向节叉的热力学优化设计

Optimization Design on Thermodynamics of Universal Joint Fork

万向节叉是汽车和拖拉机传动轴系统中的关键零件之一,万向节叉焊接时的热变形使叉末端产生很大的角变形,严重影响了万向节叉和十字轴在传动过程中传动效果。运用Creo中的Simu-late模块对万向节叉进行了三维建模、有限元热分析、灵敏度分析和结构优化设计;改进了叉头的结构,确定了最小热变形量的最优设计参数,为万向节叉的优化设计提供了定性及定量的技术依据,指出了一条优化的有效途径。

Universal joint fork is one of the key parts of the automotive and tractor drive shaft system,great angular distortion of its fork end in welding seriously affects the transmission effects of the Yokes and cross-axis.it based on simulate module in Creo,a three-dimensional modeling for the universal joint fork is done,and the finite element thermal analysis,sensitivity analysis and structural optimization design is applied as well.The structure of the fork has been improved and its optimal design parameter of minimum thermal deformation is determined.That provides the qualitative and quantitative technical basis for the universal joint fork optimized design,which points out an effective way to optimize.