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2014
Journal Article
Titel
Experimental and numerical study on shaping of aluminum sheets with integrated piezoceramic fibers
Alternative
Experimentelle und numerische Studie zum Umformen von Aluminiumblechen mit integrierten piezokeramischen Fasern
Abstract
Force-fit integration of piezoceramic fibers in micro-formed structures is a new approach for functionintegration in structural sheet metal parts. In a first step, a micro-structured surface is formed in a planarsemi-finished sheet metal part by micro-impact extrusion. Piezoceramic fibers are then assembled intothis micro-structured surface with a small assembly clearance. The fibers and the structured surface ofthe sheet metal are joined by a forming process. In the next step, the sheet metal with piezoceramicfibres within a locally micro-formed substructure is shaped by deep drawing into a 3D-geometry. In thispaper, results of the micro-impact extrusion and the joining by forming experiments are presented. Fur-thermore, the design constraints for assembly and joining due to the dimensional and form deviations ofthe piezoceramic fibers are discussed. Results of a numerical study of micro-forming, joining by formingand the global loading during a deep drawing process step were in good agreement with the experimen-tal investigations. The direct comparison between experiment and numerical simulation increases theprocess knowledge and shows further improvement potential.
Author(s)