Fraunhofer-Gesellschaft

Publica

Hier finden Sie wissenschaftliche Publikationen aus den Fraunhofer-Instituten.

Numerical simulation of welding stresses and distortions under consideration of temporal and local changes of strain rate

 
: Ossenbrink, R.; Wohlfahrt, H.; Michailov, V.

:

Denis, S. ; International Federation for Heat Treatment and Surface Engineering -IFHTSE-; Societe Francaise de Metallurgie et de Materiaux -SF2M-, Paris:
2nd International Conference on Thermal Process Modelling and Computer Simulation 2003. Proceedings : Nancy, France, March 31 - April 2, 2003
Les Ulis: EDP Sciences, 2004 (Journal de physique. 4, Proceedings 120.2004)
ISBN: 2-86883-785-9
S.169-175
International Conference on Thermal Process Modelling and Computer Simulation (ICTPMCS) <2, 2003, Nancy>
Englisch
Konferenzbeitrag, Zeitschriftenaufsatz
Fraunhofer IWM ()

Abstract
As a result Of high temperature changing rates in the heat affected zone (HAZ) the elevated strain rates during welding may have a high influence of the yield stresses. Higher yield stresses as a result of high strain rates can be observed in hot tensile tests for several materials. A model has been developed and integrated in a multi-purpose FEA-program (ANSYS(R)) to investigate strain rate effects in numerical welding simulation. The routine calculates the current yield stress as a function of the local strain rates. The influence of the resulting stresses and distortions has been analyzed in comparative numerical welding simulations.

: http://publica.fraunhofer.de/dokumente/N-57050.html