Determination of Dimensional Profile and Heat Input of Welded Joints with Average Temperature
- 24 Downloads
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.
KeywordsAverage temperature Welded joint dimension TEP FE computation Heat input increasing Longitudinal shrinkage force
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.
- 1.Satoh, K., Ueda, Y., & Fujimoto, J. (1979). Welding distortion and residual stresses. Tokyo: Sanpo Publication.Google Scholar
- 3.Masubuchi, K. (1980). Analysis of welded structures: Residual stresses, distortion and their consequences. Oxford: Pergamon Press.Google Scholar
- 13.Wang, J. C., Rashed, S., Murakawa, H., & Shibahara, M. (2011). Investigation of buckling deformation of thin plate welded structures. In Proceeding of 21st international society of ocean and polar engineering, USA Hawaii (pp. 125–131).Google Scholar
- 14.Ma, N., Wang, J. C., & Okumoto, Y. (2016). Out-of-plane welding distortion prediction and mitigation in stiffened welded structures. The International Journal of Advanced Manufacturing Technology, 84(5), 1371–1389.Google Scholar
- 15.Ueda, Y., Murakawa, H., & Ma, N. (2012). Welding deformation and residual stress prevention. Oxford: Butterworth Heinemann Publishing.Google Scholar
- 20.White, J. D., Leggatt, R. H., & Dwight, J. B. (1980). Weld shrinkage prediction. Welding and Metal Fabrication, 11, 587–596.Google Scholar
- 21.Luo, Y., Lu, H. Y., Xie, L., & Zhu, Z. F. (2004). Concept and evaluated method of tendon force. Marine Technology, 2004(4), 35–37.Google Scholar
- 22.Wang, J. C., Zhou, H., Zhao, H., Zhou, F. M., & Ma, N. (2017). Comparative study on evaluation of tendon force for welding distortion prediction in thin plate fabrication. China Welding (English Edition), 26(3), 1–11.Google Scholar
- 23.Luo, Y., Murakawa, H., & Ueda, Y. (1997). Prediction of welding deformation and residual stress by elastic FEM based on inherent strain (first report): Mechanism of inherent strain production. Transactions of JWRI, 26(2), 49–57.Google Scholar