Guide roll simulation in FE analysis of ring rolling

Abstract A new method (thermal spokes) has been proposed to simulate the guide roll effect in FE analysis of the ring rolling process. The method is simple to use with existing FE formulations, does not introduce further nonlinearities, and results in more stable and faster solution to ring rolling simulations. The method has been successfully employed in a 2D FE simulation of rolling flat rings. A special feature of the method is its ability to take into account the stiffness of the adjustment mechanism of the guide rolls. On the other hand, a simple modification has been introduced on the lever arm principle, which might be used to estimate guide roll forces in elementary analysis. Incorporating the thermal spokes method in the ring rolling simulation showed important effects of the guide rolls on the ring–tool contact region, roll force and drive torque. Finite element results are in good agreement with experimental results and confirm the validity of the thermal spokes approach as well as the proposed modified lever arm principle.

[1]  Wing Kam Liu,et al.  ALE finite element formulation for ring rolling analysis , 1992 .

[2]  D. Y. Yang,et al.  Analysis of Roll Torque in Profile Ring-Rolling of L-Sections , 1981 .

[3]  W. Johnson,et al.  On the Pressure Distribution between Stock and Rolls in Ring Rolling , 1976 .

[4]  Naksoo Kim,et al.  Ring rolling process simulation by the three dimensional finite element method , 1990 .

[5]  Taylan Altan,et al.  Investigation of ring rolling by pseudo plane-strain FEM analysis , 1991 .

[6]  Dong-Yol Yang,et al.  Rigid-plastic finite element analysis of plane strain ring rolling , 1988 .

[7]  W. Johnson,et al.  SPREAD AND FLOW PATTERNS IN RING ROLLING , 1976 .

[8]  W. Johnson,et al.  Analyses for roll force and torque in ring rolling, with some supporting experiments , 1973 .

[9]  I. Pillinger,et al.  Three-dimensional finite-element modelling of ring rolling , 1994 .

[10]  W. Johnson,et al.  Pressure Distribution, Roll Force and Torque in Cold Ring Rolling , 1976 .

[11]  C. Xie,et al.  Rigid–viscoplastic dynamic explicit FEA of the ring rolling process , 2000 .

[12]  D. Y. Yang,et al.  Ring Rolling; the Inclusion of Pressure Roll Speed for Estimating Torque by Using a Velocity Superposition Method , 1984 .

[13]  Man-Soo Joun,et al.  An axisymmetric forging approach to preform design in ring rolling using a rigid-viscoplastic finite element method , 1998 .

[14]  J. B. Hawkyard,et al.  Simulation of ring rolling using a rigid-plastic finite element model , 1991 .

[15]  W. Johnson,et al.  Experiments on ring rolling , 1968 .

[16]  Keith Davey,et al.  An efficient solution method for finite element ring-rolling simulation , 2000 .

[17]  Dong-Yol Yang,et al.  An Investigation into the Relationship between Torque and Load in Ring Rolling , 1987 .

[18]  Masujiro Hayama.  Theoretical Analysis on Ring Rolling of Plain Ring , 1982 .

[19]  I. Pillinger,et al.  A finite-element simulation of profile ring rolling using a hybrid mesh model , 1998 .

[20]  Hua Lin,et al.  The extremum parameters in ring rolling , 1997 .

[21]  S. G. Xu,et al.  Simulation of the Hot Ring Rolling Process by Using a Thermo-Coupled Three-Dimensional Rigid-Viscoplastic Finite Element Method , 1997 .

[22]  C. F. Lugora,et al.  Analysis of spread in ring rolling , 1987 .