Abstract
One of the major problems in structural fatigue life analysis is establishing structural load spectra under actual operating conditions. This study conducts theoretical research and experimental validation of quasi-static load spectra on bogie frame structures of high-speed trains. The quasistatic load series that corresponds to quasi-static deformation modes are identified according to the structural form and bearing conditions of high-speed train bogie frames. Moreover, a force-measuring frame is designed and manufactured based on the quasi-static load series. The load decoupling model of the quasi-static load series is then established via calibration tests. Quasi-static load-time histories, together with online tests and decoupling analysis, are obtained for the intermediate range of the Beijing—Shanghai dedicated passenger line. The damage consistency calibration of the quasi-static discrete load spectra is performed according to a damage consistency criterion and a genetic algorithm. The calibrated damage that corresponds with the quasi-static discrete load spectra satisfies the safety requirements of bogie frames.
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The project was supported by the National Natural Science Foundation of China (U1134201), and partly supported by the National High Technology Research and Development Program of China (0912JJ0104-DL00-H-HZ-001-20100105).
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Zhu, N., Sun, SG., Li, Q. et al. Theoretical research and experimental validation of quasi-static load spectra on bogie frame structures of high-speed trains. Acta Mech Sin 30, 901–909 (2014). https://doi.org/10.1007/s10409-014-0117-7
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DOI: https://doi.org/10.1007/s10409-014-0117-7