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  4. Numerical simulation of creep forming processes of large-scale and friction stir welded AlMgSc sheets of aeronautical applications
 
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2019
Conference Paper
Title

Numerical simulation of creep forming processes of large-scale and friction stir welded AlMgSc sheets of aeronautical applications

Abstract
The creep forming process of large-scale and friction stir welded aluminum sheets show a high potential for aeronautical applications, e.g. to replace the conventionally used cold stretch forming technology to produce thin-walled and doubled curved fuselage structures. Especially the novel aluminum alloy AlMgSc (AA5028) provides ideal conditions for the creep forming process due to its thermal stability (i.e. high recrystallization temperature). Furthermore, AlMgSc has excellent characteristics for the use in airframe structures and shows a good weldability. Hence, numerical and experimental investigations are conducted on the forming behavior of welded and spherically curved AlMgSc panels. The numerical analyses are performed as thermomechanical coupled FE simulations in order to determine the forming behavior and to optimize the forming results as function of geometrical dimensions and process parameters. The paper will show the numerical simulation using the finite element analysis and its results in comparison to the experimental verfication.
Author(s)
Zimmermann, Frieder
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS  
Brosius, Alexander
TU Dresden
Standfuß, Jens  
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS  
Jahn, Axel  
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS  
Mainwork
13th International Conference on Numerical Methods in Industrial Forming Processes, NUMIFORM 2019. Proceedings  
Conference
International Conference on Numerical Methods in Industrial Forming Processes (NUMIFORM) 2019  
Language
English
Fraunhofer-Institut für Werkstoff- und Strahltechnik IWS  
Keyword(s)
  • creep forming

  • stress relaxation

  • AlMgSc

  • Spherically curved

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