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Determination of Dimensional Profile and Heat Input of Welded Joints with Average Temperature

  • Jiangchao WangEmail author
Regular Paper
  • 26 Downloads

Abstract

With the proposal of the average temperature concept, the target of this study is to determine the appropriate dimensional profile and heat input for butt welded joints. Meanwhile, inherent deformation as the cause of welding distortion was examined to confirm the dimensional profile and heat input of welded joints for reliable welding experiments. First, butt welding experiment and measurement of out-of-plane welding distortion were conducted. The effect of length and width of welded joint on longitudinal shrinkage force was numerically considered and examined with a series of thermal elastic plastic finite element computations, where the mechanism of this behavior was clarified with average temperature. The case of heat input increasing was also examined with average temperature, which can be considered as the identical heat input for plate width decreasing. Moreover, the difference between theoretical and computational approaches to evaluate longitudinal shrinkage force was perfectly clarified with the concept of average temperature, and dimensional profile and heat input of butt welded joints were suggested.

Keywords

Average temperature Welded joint dimension TEP FE computation Heat input increasing Longitudinal shrinkage force 

Notes

Acknowledgements

The author appreciates the financial support by National Natural Science Foundation of China (Grant No. 51609091) and the Open Research Fund of Key Laboratory of Jiangsu Province for Advanced Design and Manufacture Technology of Ship, and also appreciates the relevant staff in research group of Prof. Xianqing Yin (Xi’an Jiao Tong University) for carrying out the experiments and measurements.

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Copyright information

© Korean Society for Precision Engineering 2019

Authors and Affiliations

  1. 1.School of Naval Architecture and Ocean EngineeringHuazhong University of Science and TechnologyWuhanChina
  2. 2.Joining and Welding Research InstituteOsaka UniversityOsakaJapan

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