Thermomechanical Cutting Model Discretisation: Eulerian or Lagrangian, Mesh or Meshless?

摘要

Despite of the significant technological progress in machining, at present it is very difficult to model cutting processes in order to predict optimal process performance. Usually, Eulerian, Lagrangian and ALE (arbitrary Lagrangian Eulerian) methods have been adopted for modeling cutting process. Lagrangian formulations allow accurate representations of the domain boundary evolution, however it requires a remeshing procedure. Eulerian formulations have been used in order to compute steady-state solution. However, these Eulerian techniques lead to accurate simulations of processes involving large deformations, as presented in this paper. In the context of Lagrangian simulation, the use of a new meshless technique, called the Natural Element Method, is proposed. This technique allows treating large deformations without remeshing requirements.