AI Chat Paper
Discover the SciOpen Platform and Achieve Your Research Goals with Ease.
Search articles, authors, keywords, DOl and etc.
{{expandStatus?'Exit ':''}}Advanced Search
In this paper, the C80 special coal gondola car was taken as the subject, and the load test data of the car body at the center plate, side bearing and coupler measured on the dedicated line were broken down to generate the random load component spectrums of the car body under five working conditions, namely expansion, bouncing, rolling, torsion and pitching according to the typical motion attitude of the car body.
On the basis of processing the measured load data, the random load component spectrums were equivalently converted into sinusoidal load component spectrums for bench test based on the principle of pseudo-damage equivalence of load. Relying on the fatigue and vibration test bench of the whole railway wagon, by taking each sinusoidal load component spectrum as the simulation target, the time waveform replication (TWR) iteration technology was adopted to create the drive signal of each loading actuator required for the fatigue test of car body on the bench, and the drive signal was corrected based on the equivalence principle of measured stress fatigue damage to obtain the fatigue test loads of car body under various typical working conditions.
The fatigue test results on the test bench were substantially close to the measured test results on the line. According to the results, the relative error between the fatigue damage of the car body on the test bench and the measured damage on the line was within the range of −16.03%–27.14%.
The bench test results basically reproduced the fatigue damage of the key parts of the car body on the line.
Li, X., Fang, J., Li, W., Zhang, Q., & Zhao, S. (2021). Research on fatigue bench test technology for heavy Haul vehicle body. Journal of the China Railway Society, 43(4), 33–41 (Submitted for publication).
Ministry of Railways of the People’s Republic of China (2004). GB/T 4549.1—2004 railway vehicle vocabulary, Part 1: Basic vocabulary. Beijing: Standards Press of China, (in Chinese).
Sun, J., Sun, S., LI, Q., & Wang, X. (2021). Compilation method of test load spectrum for bogie frame. Journal of the China Railway Society, 43(6), 29–36, (in Chinese).
Wang, W., Wang, Y., Sun, S., & Liang, S. (2015). Long-term load spectrum test of high speed train bogie. Journal of Southwest Jiaotong University, 50(1), 84–89, (in Chinese).
Xue, H., Li, Q., Hu, W., & Liu, W. (2017). Compilation method for fatigue test load spectrum of coupler on heavy haul freight car. China Railway Science, 38(2), 105–110, (in Chinese).
Yu, J., Zheng, S., Zhao, L., & Zhao, Z (2015). Research on spectrum development methodology for vehicle indoor road simulation test. Journal of Mechanical Engineering, 51(14), 93–99, (in Chinese).
Yu, Y., Li, Q., Li, X., & Zhang, Q. (2017). Key technologies of fatigue test rig for railway freight car body. China Railway Science, 38(4), 138–143, (in Chinese).
Yu, Y., Zhao, S., Li, X., & Li, Q. (2019). Simulation and verification of dynamic response of railway wagon on railway track. Journal of Southwest Jiaotong University, 54(3), 626–632, (in Chinese).
Zhao, F., Wang, X., LI, Q., & Wang, M. (2015). Measurement and research on the load spectrum for C70E general purpose gondola carbodies. Rolling Stock, 53(12), 28–31, 41, 5, (in Chinese).
This article is published under the Creative Commons Attribution (CC BY 4.0) licence. Anyone may reproduce, distribute, translate and create derivative works of this article (for both commercial and non-commercial purposes), subject to full attribution to the original publication and authors. The full terms of this licence may be seen at http://creativecommons.org/licences/by/4.0/legalcode
京公网安备11010802044758号