摘要
轨检车是检测轨道的主要设备之一,轴箱疲劳强度直接影响其运行安全。以铁路轨检车轴箱为分析对象,依据UIC615-4的轴箱试验验收标准规定的轴箱疲劳强度的校验方法和某型号轨检车的数据资料,完成了轨检车轴箱在不同工况下的受力分析。采用Hypermesh和ABAUQS软件建立轨检车轴箱的有限元模型并分析轨检车不同工况下的应力应变。然后结合轴箱静强度和动强度标准以及Goodman-Smith疲劳极限图评价轨检车轴箱的疲劳强度。计算结果表明,轨检车轴箱危险点位于簧座内侧的肋板焊接处,几种工况下最大的Mises应力为219.6 MPa,满足静强度要求;轴箱上危险点应力幅和平均应力分别为51.14 MPa和127.85 MPa,其疲劳强度满足要求。
The track inspection car is one of the main equipment f or rail detection and the fatigue strength of axle-boxes affects the safe operation of track inspection car directly. Taking axle boxes of the railway track inspection car as the analysis object, based on the calibration method of axle-boxes fatigue strength specified in UIC615-4 axle-boxes test acceptance standard and a certain type of track inspection car data, this paper conducts stress analysis of the track inspection car axle-boxes. A finite element model is established for the axle-boxes of the track inspection car. Then, stress and strain of the track inspection car under different conditions are analyzed by using Hypermesh and ABAUQS software. According to the axle-boxes static strength and Goodman-Smith fatigue limit diagram, it evaluates the fatigue strength of the track inspection car axle-boxes. Calculation results show that the danger point of track inspection car axle-boxes is at the spring seat inner rib weld, and the largest Mises stress of several conditions is 219.6 MPa, meeting the requirements of static strength. It finds out that the danger point stress amplitude and mean stress are 51.14 MPa and 127.85 MPa with the fatigue strength meeting the requirements.
出处
《华东交通大学学报》
2015年第5期6-9,共4页
Journal of East China Jiaotong University
基金
国家自然科学基金项目(51565013)
关键词
轨检车
轴箱
疲劳强度
有限元分析
track inspection car
axle-box
fatigue strength
finite element analysis
