Laser welding has received increased interest in the rail industry due to its outstanding performance in aesthetics, strength, heat affected area, precise control and sealing. This paper introduces the laser-welded stainless steel carbody used in subway cars. The carbody structure, welding methods, strength and fatigue analysis methods, and test verification and validation results are discussed. Firstly, the shear strength of laser welding on stainless steel with different thickness combinations were obtained through tests. The preliminary carbody structure was designed based on the material and welding properties. Then the finite element analysis (FEA) was conducted on the preliminary design to evaluate the strength and optimize the structure. After the optimization was completed, a full-size car was manufactured, and the strength test was performed. In the process of FEA and strength evaluation, the simulation accuracy of different element types and the influence of loading force directions have been considered. Based on the design, simulation and test data, a complete laser welding carbody strength evaluation system was established, which can provide valuable reference for researchers and engineers in the rail vehicle industry. The entire design, analysis and testing process complies with ASME-RT2-2014 and this is also one of the first to implement this standard.
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2019 Joint Rail Conference
April 9–12, 2019
Snowbird, Utah, USA
Conference Sponsors:
- Rail Transportation Division
ISBN:
978-0-7918-5852-3
PROCEEDINGS PAPER
Design and Strength Evaluation of Laser-Welded Carbody for Railway Vehicles Available to Purchase
Qi Luo,
Qi Luo
CRRC Changchun Railway Vehicles Co., Ltd., Changchun, China
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Chunyu Zhang,
Chunyu Zhang
CRRC Changchun Railway Vehicles Co., Ltd., Changchun, China
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Kefei Wang,
Kefei Wang
CRRC Changchun Railway Vehicles Co., Ltd., Changchun, China
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Jianran Wang,
Jianran Wang
CRRC MA Corporation, Quincy, MA
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Haifeng Hong,
Haifeng Hong
CRRC MA Corporation, Quincy, MA
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Hongxiao Wang,
Hongxiao Wang
CRRC Changchun Railway Vehicles Co., Ltd., Changchun, China
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Steven Kirkpatrick
Steven Kirkpatrick
Applied Research Associates, Inc., Los Altos, CA
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Qi Luo
CRRC Changchun Railway Vehicles Co., Ltd., Changchun, China
Chunyu Zhang
CRRC Changchun Railway Vehicles Co., Ltd., Changchun, China
Ziwen Fang
CRRC MA Corporation, Quincy, MA
Kefei Wang
CRRC Changchun Railway Vehicles Co., Ltd., Changchun, China
Jianran Wang
CRRC MA Corporation, Quincy, MA
Haifeng Hong
CRRC MA Corporation, Quincy, MA
Hongxiao Wang
CRRC Changchun Railway Vehicles Co., Ltd., Changchun, China
Steven Kirkpatrick
Applied Research Associates, Inc., Los Altos, CA
Paper No:
JRC2019-1222, V001T08A001; 9 pages
Published Online:
July 18, 2019
Citation
Luo, Q, Zhang, C, Fang, Z, Wang, K, Wang, J, Hong, H, Wang, H, & Kirkpatrick, S. "Design and Strength Evaluation of Laser-Welded Carbody for Railway Vehicles." Proceedings of the 2019 Joint Rail Conference. 2019 Joint Rail Conference. Snowbird, Utah, USA. April 9–12, 2019. V001T08A001. ASME. https://doi.org/10.1115/JRC2019-1222
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