Title :
Research on Multi-axial Fatigue Strength Assessment of Railway Vehicle Bogie Frame
Author :
Lu, Yao-Hui ; Zeng, Jing ; Wu, Ping-Bo ; Zhang, Li-Min
Author_Institution :
Sch. of Mech. Eng., Southwest Jiaotong Univ., Chengdu, China
Abstract :
Railway vehicle structures endured multiaxial fatigue loads in the service process, which aroused many difficulties for bogie frame´s design and analysis. In this paper, firstly, the basic theory of multi-axial fatigue was explained. Secondly, the modeling methods of finite element analysis and stress state under standard loads were analyzed. Finally, three methods (maximum principal stress, Mises equivalent average stress and Sines average principal stress) were used to transform the multi-axial stress to uniaxial stress. The fatigue strength were evaluated and compared based on Goodman curves of ERRI B 12/RP 17 and JIS E4207 code recommended. It is concluded that maximum principal stress among the three methods is fit to analyze the multiaxial fatigue strength of bogie frame.
Keywords :
fatigue; finite element analysis; internal stresses; railways; stress analysis; ERRI B 12/RP 17; Goodman curves; IIS E4207 code; Mises equivalent average stress; finite element analysis; maximum principal stress; multiaxial fatigue; railway vehicle bogie frame; sine average principal stress; uniaxial stress; Fatigue; Finite element methods; Load modeling; Rail transportation; Strain; Stress; Welding; Goodman curves; Multiaxial fatigue; Shell FEA; bogie frame;
Conference_Titel :
System Science, Engineering Design and Manufacturing Informatization (ICSEM), 2010 International Conference on
Conference_Location :
Yichang
Print_ISBN :
978-1-4244-8664-9
DOI :
10.1109/ICSEM.2010.89
