A novel method for the general application of measured load spectra to different high-speed train bogie frames based on virtual track irregularity. (July 2022)

• Record Type: Journal Article
• Authors: Ji, Chengxiang; Sun, Shouguang; Li, Qiang; Wang, Wenjing; Ren, Zunsong; Yang, Guangxue
• Is Part Of: Measurement. Volume 198(2022)
• Publication Date: 2022-07
• Subjects: High-speed train -- Bogie frame -- Load spectra -- Field load measurement -- Fatigue strength assessment; 1-DOF single-degree-of-freedom -- 2-DOF two-degree-of-freedom -- DCLS damage consistency load spectra -- DCLS_A DCLS based on the measured loads of the A-type bogie frame -- DCLS_B DCLS based on the measured loads of the B-type bogie frame -- EQSA equivalent stress amplitude -- FKP fatigue key point -- HRA harmonic response analysis -- IPC industrial personal computer -- LSM least squares method -- MBS multibody simulation -- PSVD primary suspension vertical damper -- RIAE relative integrated absolute error -- SLHs standardized load sequences or load-time histories -- SSVD secondary suspension vertical damper -- SVDM simplified vehicle dynamics model -- SVDM_A SVDM of CR400AF high-speed train -- SVDM_B SVDM of CR400BF high-speed train -- VTI virtual track irregularity -- VTI_A VTI-time history inverted from the measured bouncing load of the A-type bogie frame and SVDM_A -- VTI_B VTI-time history inverted from the measured bouncing load of the B-type bogie frame and SVDM_B; Weights and measures -- Periodicals; Measurement -- Periodicals; Measurement; Weights and measures; Periodicals; 530.8
• DOI: 10.1016/j.measurement.2022.111369
• Languages: English
• ISSNs: 0263-2241

Abstract

Highlights: Field load histories of different bogies in coupled operation were measured. A simplified vehicle dynamics model matching the bouncing load was established. The virtual track irregularity was obtained based on the measured load history. The actual load history was accurately predicted based on the VTI and SVDM. Abstract: This paper describes a novel method for the general application of measured load spectra to the bogie frames of different high-speed trains. It is based on virtual track irregularity (VTI), an inversion of the measured load history, combined with a simplified vehicle dynamics model (SVDM). First, the A/B-type bogie frames and their attached components were strain gauged to measure the field load histories in coupled operation under actual operating conditions. Then, a comparison of the measured load spectra and an attempted mutual application of the damage consistency load spectra (DCLS) were conducted. Finally, as an example, the SVDM matching the bouncing load was established, and a complete procedure was proposed for generating the VTI in the time domain. The agreement between the measured and calculated load spectra indicated that the actual load histories acting on the different bogie frames can be accurately predicted based on the VTI and SVDM.