Analysis of Process Signals of Resistance Spot Welding for DP590 Steel Using Numerical Calculation

Although the finite element (FE) numerical calculation model has been extensively employed in analyzing metal characteristics, very few works use it to analyze features of main process signals during resistance spot welding (RSW) process. Hence, its generality was seriously restricted. In this work, a 2D FE model, which coupled thermal, electrical and mechanical fields, established with reasonable meshing parameters boundary conditions. The parent used dual phase (DP) 590 steel, is commonly automobile lightweight manufacturing An actual experiment same conditions as conducted. dynamic electrode displacement obtained from were compared analyzed. Many important characteristics have reasonably explained by combining results experiments. reasonability accuracy not only verified after but also examined depth intermediate work can effectively enlarge applications strengthen correlation between control strategy design, online quality estimation using RSW