Solving heat conduction problems with a moving heat source in arc welding processes via an overlapping nodes scheme based on the improved element-free Galerkin method

•Moving heat sources effects are captured accurately via a novel meshless approach.•The novel overset improved element-free Galerkin method is very easy to implement.•The method supports the thermal analysis of welding processes under real conditions.•The implementation in complex 3-D geometries is...

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