Study on Vibration Fatigue Test and Numerical Simulation of EMU Tank
[1]Wang Jianming,Li Xiaoxiao.Study on Vibration Fatigue Test and Numerical Simulation of EMU Tank[J].Journal of Zhengzhou University (Engineering Science),2019,40(01):72-.[doi:10.13705/j.issn.1671-6833.2018.04.011]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
40
Number of periods:
2019 01
Page number:
72-
Column:
Public date:
2019-01-10
- Title:
- Study on Vibration Fatigue Test and Numerical Simulation of EMU Tank
- CLC:
- -
- DOI:
- 10.13705/j.issn.1671-6833.2018.04.011
- Abstract:
- Welded structures were commonly used for railway vehicles and equipment. Fatigue failure of welded structures with fluctuating loads usually occursed at weld seams. So Random Vibration Bench Test and Numerical Simulation for Fatigue Life of Welded EMU Tank were studied. Through the bench test, the acceleration power spectrum of the structure was input, simulating the random vibration of water tank fatigue conditions to get the tank vibration time domain signal. It was regarded as a fatigue simulation of the input load. The finite element model of tank and weld was established by shell element, and the internal liquid was equivalent by the additional mass method. According to BS7608 standard, different weld grade S-N curves were selected, prediction of fatigue life of water tank is based on nominal stress approach under test conditions. The simulation results show that fatigue failure site and fatigue life of weld in tank was similar to those that in the experimental tests of random vibration. This research proved the correctness of the fatigue life prediction method of weld, and could provide a theoretical reference for the fatigue design of the welded structures for EMU tank.
- References:
- -
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Last Update:
2019-03-01