Determination of Dimensional Profile and Heat Input of Welded Joints with Average Temperature
Determination of Dimensional Profile and Heat Input of Welded Joints with Average Temperature
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DOI：
10.1007/s12541-019-00071-7
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发表时间：
2019-04
影响因子：
1.9
通讯作者：
Jiangchao Wang
中科院分区：
文献类型：
--
作者：
Jiangchao Wang
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.
