Download Package for Hypoplastic interface model and UMAT – FRIC interface

Description: Download Package of frictional interface model by Stutz et al. (2016, 2017) for granular soils based on Hypoplasticity using the hypoplastic UMAT Implementation. Also, interface between UMAT and FRIC standards is included. Description of the implementation and a user manual can be found here.
Authors: The original umat implementation has been developed by Claudio Tamagnini in 2005. Subsequently, it has been developed and updated to new models by David Mašín. The subroutine was then used by Henning Stutz in development of the new interface model implementation.
References:

  • Stutz, H., Mašín, D., Sattari, A. and Wuttke, F. (2017). A general approach to model interfaces using existing soil constitutive models - application to hypoplasticity. Computers and Geotechnics , Volume 87, July 2017, Pages 115-127 (doi: 10.1016/j.compgeo.2017.02.010). [Preprint PDF]
  • Stutz, H., Mašín, D. and Wuttke, F. (2016) "Enhancement of a hypoplastic model for granular soil-structure interface behaviour", Acta Geotechnica 11, No. 6, 1249-1261. [Preprint PDF]

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