Analysis of ribbed-strip rolling by rigid-viscoplastic FEM

Ribbed strip rolling by three-dimensional finite element method combining extremely thin array of elements

“…A comparison of the calculated and measured pulling down of rib height [5] with various rib inclined angle is shown in Fig. 10.…”

“…Some researchers have used the rigid plastic/visco-plastic FEM to solve the strip rolling [4,16], shape rolling [17], and edge rolling [18][19][20]. Jiang et al [5,21] investigated the special strip rolling by rigid plastic/visco-plastic FEM. A model for rolling deformation with grain subdivision was developed [22,23].…”

“…In this paper, the author concentrates on the analysis of the rib deformation of ribbed strip in the roll bite using a threedimensional finite element thermo-mechanical simulation of the special strip rolling considering friction variation model [5]. The theoretical analysis is based on the utilization of the finite element flow formulation with boundary conditions to characterize the material flow, combining the use of an extremely thin array of elements that is equivalent to the calculation of the additional shear deformation work rate to account for the velocity discontinuity in the roll bite.…”

A FEM modelling of the elastic deformation zones in flat rolling

“…Assume that, after iteration i, an approximation u M i , to the solution can be obtained. Let c M i+1 be the difference between this solution and the exact solution to the discrete equilibrium equation (8). This means that…”

“…The plastic deformation, therefore, is the main part that forms the desired shape and products. A rigid-plastic/visco-plastic finite element method has been employed to solve many metal rolling processes, such as flat rolling [1], shape rolling [2][3][4], edge-rolling [5,6], special shape steel rolling [7,8] and so on. There are also some issues about the algorithms used to improve the simulation processes [9,10].…”