Finite element analysis modeling of ingot refusal conditions during the rolling process

This paper deals with modeling of refusal conditions of aluminium ingots as they enter the work roll gap during the rolling process. The rolling process rolls ingots into thinner ingots. Under some rolling conditions the ingot will bounce back from the work rolls or “refuse”. Two dimensional finite element (FE) modeling was done to study this phenomenon and an analytical form of the refusal conditions was derived. Two FE packages (ADINA and ABAQUS/Standard) were used and significant differences in simulation results were noted between the two packages. The FE model was applied to an industrial problem.