压装过盈量对CRH3动车组车轮轮对强度的影响分析

Abstract

车轴轮座与车轮轮毂孔之间的压装过盈量是动车组轮对压装工艺中的关键工艺参数，它不仅影响着压装力是否满足压装曲线还影响着轮对在承载情况下的强度水平。本文以CRH3动车组的动力轮对为研究对象，针对TB/T2368-2005载荷工况，运用ANSYS分析过盈量对轮对强度的影响。分析结果表明，当过盈量达到0.238 mm时，CRH3动车组车轮轮毂孔内侧边缘达到许用应力，为压装工艺极限过盈量的选取提供了依据。 The pressed interference between the wheel seat and the wheel hub is the critical process para-meters during the press-fit process of the EMU wheels, which not only affects whether the press mounting force meets the pressed curve, but also affects the strength of the wheels under the bearing condition. This paper takes the power wheels of the CRH3 EMU as the research object and analyzes the interference with the influence on strength by using ANSYS according to TB/T2368- 2005. The results show that the inside edge of the CRH3 EMU wheel hub reaches the allowable stress when the interference reaches 0.238 mm, providing the basis for the selection of the limited interference during the press-fit process.