Determining the properties of multi-range semi-tubular self-piercing riveted joints

Abstract By applying a variety of strategies, including both the development new drive concepts as well use lightweight constructions, it is intended to meet climate targets set by Paris Agreement. Multi-material design often used when especially in mobility sector. Herby, various materials with different properties are combined adapt structure application force order reduce weight. For example, this can result (high-strength) steel and aluminium. However, increasing number resulting joints has led joining processes. These only be limited extent for multi-material usually inflexible facing changing boundary conditions. Examples further difficulties affecting established processes metallurgical incompatibilities, which particularly pose thermal A frequently mechanical process self-piercing riveting. Due its high load-bearing capacities, wide range robustness dissimilar material required. case riveting used, material-thickness combinations leads need large rivet-die-combinations respective task. Since system cannot react these changes, tool change or an adjustment necessary, reduction efficiency extended times. To increase flexibility efficiency, new, versatile technologies needed that adapted One possibility multi-range capable semi-tubular rivets, inserted into joint using punch-sided actuator technology. The increased technology enables rivet inner punch subsequently form head embossing outer punch. All movements controlled independently each other, enabling adaptive parameters. Depending on geometry formation performed without deformation. deformation consists tubular shape ring grooves area. Using punch, formed creating interlock area rivet. designed differently. It modified enable subsequent forming thickness protrusion onto part. In study presented here, presented, analysed property profile determined basis combinations. Here, characteristic parameters capacities determined. Finally profiles compared conventionally manufactured identify potential improvement.