摘要
为研究CRH2拖车轮轴服役应力,建立CRH2拖车轮轴集成有限元模型,进行典型服役线路谱载荷轮轴结构服役应力模拟计算。结果表明:集成有限元方法可以实现准确有效模拟轮轴关键部位服役应力状态;研究得到不同轮轨接触位置踏面屈服条件及屈服区域状态;分别在9组典型线路普载荷下踏面不同深度剪应力分布,极限偏载工况下服役应力会相对增大,且踏面以下2-3mm处存在224.84-289MPa剪应力极值。
In order to study the service stress of CRH2 non-power wheelsets,the integrated finite element model was established to simulate the service stress of the typical service line spectrum load.The results show that the integrated finite element method can accurately simulate the service stress of the key parts of the wheelsets;the yield conditions and yield region states of the tread at different wheel rail contact positions are obtained;the shear stress distribution of the tread at different depths under the common load of 9 groups of typical lines respectively increases under the extreme eccentric load condition,and 224.84-289mpa exists at 2-3mm below the tread Extreme shear stress.
出处
《科技创新与应用》
2020年第5期69-71,共3页
Technology Innovation and Application
关键词
CRH2动车组
拖车轮轴
集成有限元
应力分布
CRH2 EMU
non-power wheelsets
integrated finite element
stress distribution
