某工程车轴箱结构优化及强度分析

Structural Optimization and Analysis of Strength of an Engineering Vehicle Axlebox

针对某工程车转向架新设计的轴箱存在诸多理论设计缺陷的问题,对其进行结构优化。依据EN 13749:2005《铁路应用转向架构架结构要求的规定方法》,计算了结构优化后轴箱在超常工况、运营工况及起吊工况所受载荷,并对其进行有限元计算。计算结果表明:轴箱满足超常工况、运营工况及起吊工况的强度要求;运营工况时,轴箱应力较大位置处节点的应力计算结果仍在Goodman-Smith疲劳极限包络线内,轴箱疲劳强度满足设计要求。

Aiming at the problems of many theoretical design defects in the newly designed axlebox of an engineering vehicle bogie,the structure was optimized.According to EN 13749:2005“Railway Applications-Methods of Specifying Structural Requirements of Bogie Frames”,the load of the axlebox after structural optimization under abnormal conditions,operating conditions and lifting condition was calculated,and finite element calculation was carried out.The calculation results show that the axlebox satisfies the strength requirements of abnormal conditions,operating conditions and lifting conditions.In the operating conditions,the calculation results of the nodes at the larger axlebox stress are still within the envelope of the Goodman-Smith fatigue limit.The axlebox fatigue strength meets the design requirements.