Lehrstuhl für Fertigungstechnologie, Universität Erlangen-Nürnberg

Computer aided engineering of solid bonding phenomena



Datum: 04.03.2014


Author

  • Dr. M. Sc. Davide Campanella

Reporter

  • Prof. Dr.-Ing. habil. M. Merklein
  • Prof. Dr. L. Fratini

Traditional welding processes are based on the melting of the materials to be joined. These processes can result in several defects cause by the solidification process, the deformation of the weld seam and metallurgical inconstancies. On the contrary solid bonding processes allow for failure free joints with small residual stresses and little distortion. But these processes are characterized by a complex material flow making process design a challenge. This research work aimed at the computer assisted investigation of two manufacturing processes that are based on solid bonding. The processes in question were Linear Friction Welding (LFW), which was used to join partners that were not axial symmetric and Accumulative Roll Bonding (ARB), a process used to improve the mechanical properties of sheet metal semi-finished products. Experiments were used to investigate the influence of the most important process parameters on the product quality. This led to the development of a process window. In addition the mandatory data for the building and validation of the numerical models was collected. These models were used to further investigate the effects of the process parameters.