Prediction of Welding Deformations of CRH380 Aluminum Alloy Side-Wall with Equivalent Thermal Load Method Based on Inherent Strain

Abstract:

The manufacture core of CRH380 high-speed train is aluminum alloy welding technology. However, welding residual distortion which occurs in welding process brings unfavorable effect on the quality of high-speed train. As a result, welding distortion forecasting and control become an important and urgent research topic in railway vehicles. Using equivalent thermal load method based on inherent strain given by the formulae, the welding distortion of aluminum alloy side-wall was predicted by an Elastic FEM which consider actual welding conditions. The simulation results were compared with experimentally measured data to evaluate the validity of the model and to verify effectiveness of this method for large-scale welding structure which had long seams.

• Periodical: Advanced Materials Research (Volumes 652-654)
• Pages: 2303-2310
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.652-654.2303
• Online since: January 2013
• Authors: Ya Na Li*, Su Ming Xie, Jian Hui Zhang
• Keywords: Aluminum Alloy Side-Wall, Equivalent Thermal Load, Inherent Strain, Welding Distortion

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