Numerical simulations supporting the process design of ring rolling processes

Recent development of ring rolling theory and technique

“…In the aspect of RARR FE modelling, based on the RRR FE modelling skill, some new approaches were proposed. For instance, the modelling skill of adaptive matching control of rolls' movement was used to improve the stability of RARR process (Jenkouk et al, 2013;Kebriaei et al, 2013;Lee et al, 2014a;Wang et al, 2010). Besides, the modelling skill of dual mesh and hybrid mesh was used to improve the simulation accuracy and computational efficiency Ward, 2002b, 2003;Kim et al, 2013).…”

“…at Taiyuan University of Science and Technology (Li et al, 2014b), Allwood J.M. at University of Cambridge (Stanistreet et al, 2006), Hirt G. at RWTH Aachen University (Jenkouk et al, 2012(Jenkouk et al, , 2013), Davey K. at University of Manchester Institute of Science and Technology Ward, 2002b, 2003), Moon Y.H. at Pusan National University (Kil et al, 2014), Kebriaei R. at RWTH Aachen University (Kebriaei et al, 2013), GIorleo L. at University of Brescia (GIorleo et al, 2013), have made exploratory study on the theory, technology and equipment of RARR and obtained important research results.…”

Investigation of a composite ring rolling process by FEM and experiment

“…The simulation considers gravity and the existence of a rolling table. The conducted simulations use a fully closed-loop controlled model, which is described in detail in [24,25]. The control loop for the eight degrees of freedom is realized in FORTRAN via an ABAQUS user subroutine called VUAMP.…”

“…In a further step, own fully documented control algorithms were integrated into the FEM-simulation. The existing FEM-simulation model allows ring rolling processes without prior knowledge of the expected kinematics as well as the development of new rolling strategies [24,25].…”

“…Successively all eight degrees of freedom have been automated through the implementation of virtual sensors and control algorithms [23]. Since the control algorithms of the ring rolling mills belong to the protected know-how of the supplier, in past investigations of the IBF [24,25] the control algorithms were implemented in a first step as a black box provided by the machine supplier. In a further step, own fully documented control algorithms were integrated into the FEM-simulation.…”