Theoretical prediction of failure in forming of friction stir welded blanks
- 145 Downloads
In this paper, the Marciniak-Kuczynski method is used to predict the forming limits of friction stir welded tailor-made blanks. Three different FEM models, having three different levels of the welds details implemented, are built and the straining limits of a prototype friction stir welded blank during the Limiting Dome Height (LDH) test is predicted by using the models. The imperfection parameter is determined such that the predicted failure limits in a simulated tensile test match the experimentally obtained ones. It has been shown that the implementation of the weld details is necessary for accurate prediction of the failure limits.
Key wordsFriction stir welded blanks Formability Marciniak-Kuczynski FEM
Unable to display preview. Download preview PDF.
- 1.AA. Zadpoor, J. Sinke and R. Benedictus, Finite element modelling of transition zone in friction stir welded tailormade blanks, In: Proc. NUMIFORM’07, eds, J.M.A. Cesar de Sa, A.D. Santosa, AIP Conference Proceedings vol. 908 (2007) 1457-1462.Google Scholar
- 2.AA. Zadpoor, J. Sinke and R. Benedictus, Springback behavior of friction stir welded tailor-made blanks, In: Proc. IDDRG07, eds, M. Tisza, Gyor (2007), 317.-324.Google Scholar
- 3.NUMISHEET 1996 benchmark documents available at http://rclsgi.eng.ohio-state.edu/~lee-j-k/Numisheet96/
- 4.S. Liu and Y. J. Chao, Determination of Global Mechanical Response of Friction Stir Welded Plates Using Local Constitutive Equations, Model. Simul. Mater. Sci. Eng. 13(2005) 1-15.Google Scholar