353130B型缺陷轴承运行中温度特性数值研究

Numerical Study on Temperature Characteristics of 353130B Defective Bearing in Operation

随着铁路货车提速和重载化,以及中欧班列开行,轴箱轴承缺陷部件引起的温升会变得更加严重,并影响轴承的有效寿命、润滑和磨损等。以353130B型轴承为例,利用ANSYS/LS-DYNA软件,基于有限元理论,提出了一个研究轴箱轴承温升的摩擦力矩模型,并开发了一个新的有限元模型。通过该模型进行了热-力耦合场数值研究,有利于认识轴箱轴承的热应力和温度特性,对THDS标准所规定的报警温度给出了一个修改建议,为铁路车辆部门提供技术支撑。

With the development of railway freight speed up and heavy load,as well as China Railway Express Operation,the temperature rise caused by the defective parts of axlebox bearing becomes more serious and affects the effective life,lubrication and wear of the bearings.Taking the 353130B bearing as an example,using ANSYS/LS-DYNA software,based on the finite element theory,a friction torque model for studying the temperature rise of axlebox bearings is proposed,and a new finite element model is developed.The numerical study of the thermo-mechanical coupled field is carried out by this model,which is helpful for understanding the thermal stress and temperature characteristics of the axlebox bearing.A modification proposal for the alarm temperature stipulated in THDS standard is given,which provides technical support for railway vehicle departments.