In this paper, rigid-thermoviscoplastic finite element method with various damage models including McClintock damage model, Cockroft-Latham damage model, Freudenthal damage model, Rice-Tracey damage model and Modified Lemaitre damage model is tried to...
In this paper, rigid-thermoviscoplastic finite element method with various damage models including McClintock damage model, Cockroft-Latham damage model, Freudenthal damage model, Rice-Tracey damage model and Modified Lemaitre damage model is tried to predict the Mannesmann effect. The damage models are criticized in terms of Mannesmann effect. It is shown that most traditional damage models are far away from predicting the Mannesmann effect occurring in rolling of round bar with barrel-type rolls and without mandrel or mandrel, emphasizing the necessity of new proper damage model to predict the Mannesmann effect.