Analyzing and Optimization the Resistance Welding Spots of a Trunk Lid Hinge Reinforcement Plate

Based on the finite element method (FEM), this research focused on the trunk lid hinge reinforcement plate welding spot crack problem. The number of the resistance spot welding (structure adhesives) and the structure of the hinge reinforcement plate are analyzed, and we found the method to solve the trunk lid hinge reinforcement plate welding spot crack problem. The stress of trunk lid inner panel was reduced from 128 to 80 Mpa, the fatigue life was increased to more than 10,000,000 from 248,000 by CAE simulations, and the CAE simulations have been effectively verified with the prototype test.