Explicit F.E. formulation with modified linear tetrahedral elements applied to high speed forming processes

We will adapt a recent explicit FE formulation with modified linear tetrahedral elements for high speed metal forming simulation. This formulation both enables the use of efficient adaptive non structured meshers, and tackles the locking effect in quasi-incompressible cases. We implement this formulation for the infinitesimal elastic plastic case. The anti-locking modification effect will be underlined on two 3D bench marks: an elastic compression test and an elastic-plastic bar impact test.