Advances in Metal Forming Simulation of using Arbitrary Lagrangian Eulerian Formalism

Accurate modelling of stationary solution of continuous cold roll forming by the finite element method using the classical Lagrangian formulation usually requires a very large mesh leading to huge CPU times. An alternative method is given by the Arbitrary Lagrangian Eulerian (ALE) formalism which consists in decoupling the motion of the material and the mesh. Starting from an initial guess of the sheet geometry between the rolls, the numerical simulation is performed until the stationary state is reached with a mesh. In this paper, ALE results are compared to previous Lagrangian simulations and experimental measurement on a U-channel, including springback