Study on Torsional Load Characteristics of High-speed Train Bogie Frame

doi:10.3901/JME.2021.02.147

Abstract

Abstract: Taking two structure patterns(A/B) of high-speed train bogie frames as research objects, the direct testing method is used to identify their torsional loads under same operation condition. The torsional load characteristics in time domain, frequency domain and load values distribution are compared, and the similarity of the torsional load spectrum is evaluated. Finally, the feasibility of bilateral use of torsional load spectrum is verified based on fatigue damage simulation results. The results show that the time- and frequency-domain characteristics of torsional loads from two kinds of bogie frames are the same in typical operating conditions. The torsional load range of A-frame is larger than that of B-frame, and they have stable ratio relationship in different intervals. The distribution characteristics of torsional load values of two kinds of bogie frames are consistent, and they are roughly symmetrical spike distribution around y-axis. On the premise that the length and shape of torsional load spectra of two kinds of bogie frames are highly similar, the maximum damage ratio of interchangeable load spectrum considering load values proportion relationship to load spectrum of original structure are 1.3(A-frame) and 1.5(B-frame), which meets the requirements for bogie frame fatigue assessment.

Key words: bogie frame, structure pattern, torsional load, load characteristics, load spectrum

CLC Number:

U270

JI Chengxiang, SUN Shouguang, YANG Guangxue, MENG Qingdao. Study on Torsional Load Characteristics of High-speed Train Bogie Frame[J]. Journal of Mechanical Engineering, 2021, 57(2): 147-157.

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