Finite element simulation of twin-roll casting process with an implementation of slip/friction boundary condition

The twin-roll casting process is simulated by tr general thermomechanical m odel but using a versatile finite element method. The multidomains method i s employed to deal with the solid and liquid phases separately. This includ es treating the liquid phase as an Newtonian fluid a,zn the solid phase as a viscoplastic metal, Furthermore, a friction model is proposed to analyze the rolling effect of the completely solidified metal. From the results of this study: the implementation of the friction model can produce a reasonab le flow field of the solidified metal. Oz addition, the non-slip condition severely restricts the motion of the solidified metal and introduces inaccu racy on the temperature, velocity and stress fields as compared to the curr ent approach.