Finite element and boundary element coupling for metal chipping.
M. Maischak (Universität Hannover, Germany)
We present a boundary element and finite element coupling procedure for elastoplastic thermo-mechanical contact problems with a linear elastic work tool and an elastoplastic work piece.
The mechanical equation and the heat conduction equation are solved by staggered iteration. We discretize the elastoplastic material by boundary and finite elements and the elastic work tool by boundary elements whereas the temperature is modelled by finite elements in both bodies. The heat conduction equation is discretized with backward Euler in time whereas the elastoplastic material in the work piece is discretized with an explicit Euler time stepping procedure. Lagrangian update is performed to calculate the new configuration.