Unified formulation for ultimate capacity of shear failure of arc spot welding using genetic programming

This study addresses genetic programming (GP) for the formulation of ultimate capacity of shear failure of arc spot welding. The proposed GP formulation is based on experimental results. The ultimate shear capacity of arc spot welding is formulated in terms of tensile strength, average welding thickness and diameter. The results of the proposed GP model are later compared with results of existing codes and are found to more accurate. In existing design codes four different equations are used whereas the proposed GP model is a unified formulation valid for all governing shear failures at the same time.