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The use of aluminum sheets is a powerful means of reducing the weight of cars and domestic electric appliances. However, because spot welding causes several problems in joining aluminum sheets, mechanical joining is required. Mechanical clinching is a method of mechanical joining with excellent features with regard to productivity, energy saving, and recycling efficiency. However, there is a problem associated with the low peel strength of mechanical clinching. The purpose of this research is to improve the peel strength of mechanical clinching. In this research, an experiment and a simulation are performed using a stripper plate with a ring projection instead of a flat stripper plate. The material used in the experiment is a sheet of aluminum A5182 with a thickness of 1 mm. The main results are as follows: 1) Interlock angle increases when the stripper plate with ring projection is used. 2) Peel strength increases when interlock angle is increases. 3) The increase in interlock angle occurs because a stripper plate with a ring projection pushes the material into a die cavity and prevents it from flowing out.

Effect of Stripper Plate with Ring Projection on Peel Strength of MechanicalClinching of Aluminum Sheet