Finite Element implementation of hypoplasticity

There are two implemetations of the Von Wolffersdorff version of hypoplasticity available. (Fortran subroutines for the Program ABAQUS)

  • New Version by Wolfgang Fellin and Alexander Ostermann : umat_vec.fwith consistent tangent operator and error control
  • Old Version by Dennis Roddeman: umat.f
    This work was done by Dennis Roddeman on the European Union Project "FEM-Implementation of Hypoplasticity", 1997 (Projekt Nr. ERBCHBGCT 940554)
    There is no service available to this routine anymore.