Influence of clinching steps and sheet thickness on the mechanical properties of the clinching joint

In order to reduce the protrusion height and increase strength of clinched joint, a two-step clinching method was investigated in present study. The whole process contains two steps. first step is used produce one-step joints, second press joints joining strength. influences steps sheet thicknesses on mechanical properties joint were investigated. main failure mode all tests neck fracture mode. thickness can be enlarged by method, reduced. TCJ2.5-2.0 has highest energy absorption strength, OCJ2.0-2.5 lowest contribute increasing For getting higher thick should taken as top sheet. With lower protrusion, use will convenient engineering areas.