Structural Pattern Evaluation Method for EMU Bogie Frames

doi:10.3901/JME.2018.18.140

Abstract

Abstract: Bogie frame is a major loaded part of EMU running gear. Fatigue strength and lightweight are kernel objects in frame structure design. Comparison studies on box type and tube type bogie frames is taken through rigid-flexible coupling vehicle dynamic simulations and strain life fatigue damage computations. Modal vibration responses, total strain energy and fatigue damages are obtained under track twist, high speed straight line and S curving operation conditions. According to the loading types, modal participant coefficients and respected strain energy fractions are compared for the two types of bogie frames. Strain energy mass ratio is proposed to evaluate material usage. Structural patterns of two type bogie frames are systemically evaluated by strain energy mass ratio and modal frequency index within the framework of fatigue strength.

Key words: bogie frames, electric multi-units vehicles (EMU), modal response, structural patterns

CLC Number:

U260

WANG Jianbin, SONG Ye, WU Pingbo. Structural Pattern Evaluation Method for EMU Bogie Frames[J]. Journal of Mechanical Engineering, 2018, 54(18): 140-145.

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