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  4. Numerical simulation of welding stresses and distortions under consideration of temporal and local changes of strain rate
 
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2004
Conference Paper
Title

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

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.
Author(s)
Ossenbrink, R.
Wohlfahrt, H.
Michailov, V.
Mainwork
2nd International Conference on Thermal Process Modelling and Computer Simulation 2003. Proceedings  
Conference
International Conference on Thermal Process Modelling and Computer Simulation (ICTPMCS) 2003  
DOI
10.1051/jp4:2004120019
Language
English
Fraunhofer-Institut für Werkstoffmechanik IWM  
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