Abstract: Multi-pass slab vertical-horizontal (V-H) rolling process with variable vertical roll shape have been simulated with explicit dynamic finite element method and updating geometric method. The distributions of plastic strain contour of slab during rolling process with different vertical roll and under different rolling stage have been obtained. The results show that there exist two thin strain assembling zones in slab when the flat vertical roll is used, and there just exist one strain assembling zones in slab when the vertical roll with groove is used. And compared the deformation equality between flat vertical roll and vertical roll with groove, the later is better than the former, which supplies the theory prove to the slab deformation distribution during V-H rolling process and is helpful for predicting the slab texture.

Key words: strain, V-H rolling, multi-pass, FEM, updating geometric method