高速转向架构架强度及模态分析研究  

Fatigue Strength and Modal Analysis of High-Speed Bogie Frame

作　　者：吴丹[1] 李晋武[1] 

机构地区：[1]兰州交通大学铁道技术学院,甘肃兰州730070

出　　处：《兰州交通大学学报》2013年第1期161-163,共3页Journal of Lanzhou Jiaotong University

摘　　要：根据某型高速转向架构架的结构特点,利用Ansys软件建立构架的有限元模型,依据TB/T 2368-2005标准和焊接材料的Goodman-smith疲劳极限图对构架进行疲劳强度评估.结果表明:各关键点的等效应力均小于相应的许用应力,构架满足疲劳强度的要求.此外,还对构架的模态进行了分析,分析构架在某一频域内的振动模态,从而评价构架的动态性能是否满足设计要求.Based on the structure and load characteristics of a high-speed bogie frame, the finite element model of the frame is built by using Ansys. The fatigue strength of the frame is checked referring to TB/ T2368-2005 and Goodman sketch for welding materials. Analyzed with the simulation results, the test stress values are lower than standard values, and the frame meets the requirement of fatigue strength. In addition, the modal analysis of the frame is made, and the vibrational modal of frame in given frequency domain is predetermined to evaluate the dynamical behavior of the frame in order to meet the dynamical design requirements.

关 键 词：构架 有限元 疲劳强度 模态分析 

分 类 号：U270.331[机械工程—车辆工程]