This research is focused on one of the problems frequently encountered in spot welding in industry. In many applications several spot welds are made close to each other. The spots made after the first spot may become smaller in size due to shunt effect. A numerical and experimental study has been conducted to investigate the effect of shunting on nugget size in spot welding of HSLA steel sheets. Different cases with different spacing between weld spots have been examined. The nugget sizes have been measured by metallographic examination and have been compared with 3D finite element simulations. The results of this study revealed that the shunt effect becomes negligible when the minimum weld spacing is about six times the electrode diameter. The results showed that the weld nugget diameter is more sensitive to shunt effect than the nugget height.
|Title of host publication||Proceedings of the 11th International Seminar Numerical Analysis of Weldability|
|Number of pages||8|
|Publication status||Published - 2015|
|Event||11th International Seminar Numerical Analysis of Weldability - Castle Seggau, Graz, Austria|
Duration: 27 Sep 2015 → 30 Sep 2015
|Conference||11th International Seminar Numerical Analysis of Weldability|
|Period||27/09/2015 → 30/09/2015|