- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
- Chinese S&T Journal Citation Reports
- Chinese Science Citation Database
| Citation: | LI Xinkang, WANG Suqin, LIU Chaotao, ZHANG Jia, CHEN Yifei. Fatigue Life Assessment of Metro Carbody Based on Submodel Method[J]. Journal of Southwest Jiaotong University, 2022, 57(2): 295-300, 330. doi: 10.3969/j.issn.0258-2724.20200301
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The carbody is an important load-bearing component of metro vehicles. In view of the high comprehensive difficulty of the full-scale carbody fatigue test, on the basis of the characteristics of the end underframe model including the most severely stressed structures in the carbody (e.g., the draft, bolster and buffer), adoption of a fatigue test method using an end underframe submodel is proposed instead of the full-scale carbody. Finite element models of the end underframe and the full-size carbody are established, and the fatigue loads are determined according to the EN 12663 standard. The end underframe model and the stress distribution at key positions of the full-scale carbody are made consistent by setting reasonable boundary conditions. The stress at key positions of the end underframe is measured in a test, and a comparison is made with simulation results to verify the accuracy of the finite element model. The nominal stress method and the
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