Optimization-based procedure for the determination of the constitutive model coefficients used in machining simulations
Communication avec acte
Author
CHENG, Wenyu 
MARTINS DO OUTEIRO, Jose CarlosCOSTES, Jean-PhilippeM’SAOUBI, RachidKARAOUNI, HabibDIETRICH, StefanMARCON, BertrandROSA, PedroAbstract
This paper deals with the determination of the constitutive model coefficients used in machining simulations. An optimization-based procedure is developed and applied to constitutive model coefficients determination of Ti6Al4V titanium alloy. The procedure is implemented in LS-Dyna/LS-Opt software, coupled with Abaqus/Explicit to calculate the force-displacement curve at each iteration, which is required for the optimization-based procedure. The robustness of the procedure to determine the constitutive model coefficients is evaluated by comparing the predicted and measured plastic strain distributions in the samples.
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