Lehrstuhl für Fertigungstechnologie, Universität Erlangen-Nürnberg

Joining by Hydroforming

Project Status: finished


Within the scope of this research project joining via hydroforming (IHU) is analytically, numerically and experimentally examined. Within IHU fluids are used to achieve a plastic deformation by applying pressure in a hollow body to achieve a plastic deformation. Potentials of this forming process are the high design flexibility, the possible integration of functions and the reduction of the number of manufacturing steps. Besides the forming of sheet metals, profiles or pipes IHU processes also allow joining of components by expansion of one joining partner. The aim of this research project is the design of a joining process of a tube and ring by IHU. The surface properties and flow behavior of the pipes are characterized prior forming to examine the joining process analytically and numerically. Using these input parameters a finite element simulation is built up to increase process understanding. The FE model is validated by evaluating simple IHU processes. The numerically gained knowledge is used for the tool construction as well as the definition of joining parameter.


Research Groups



    • Degner, J.; Herrmann, J.; Junker, F.; Berendt, E.; Merklein, M.:
      Leichtbauwerkstoffe für den modernen Automobilbau.
      Zeitschrift Konstruktion 3(2018), pp. 50-54

    Letztes Update: 08.08.2017