Download package of ISA cyclic hypoplasticity model. Contains umats and example Abaqus input files. Umats (ISA+sand hypoplasticity) allow to switch between ISA and classical intergranular strain concept.
Simple Matlab element test driver running elasto-plastic and hypoplastic models. Programmed in 2012 by Claudio Tamagnini and David Mašín for the ALERT Olek Zienkiewicz Course.
Download link for FLAC3D implementation of SANISAND model.
Contains journal publication, associated umat for Abaqus and README.txt explaining model parameters and state variables.
Download link to Plaxis PM4Sand dll
Download link for additional references, software manuals and simulation codes of PM4Silt model maintained by the model developers from University of California at Davis.
Download link for additional references, software manuals and simulation codes of PM4Sand model maintained by the model developers from University of California at Davis.
Package contains Plaxis UDSM (dll files only), package documentation in pdf and related journal publication and PhD thesis pdf files. Authors are
researchers from the Graz University of Technology.
Download package of sand and clay hypoplasticity for GeoSlope SIGMA/W finite element code. Based on umat, comes along with the source code.
Download package of barodesy model. Contains ABAQUS umat (source code), Plaxis UDSM (dll files only, not source code), package documentation, related journal publications, Abaqus and Plaxis examples.
Download package of Triax element test sofware by D. Mašín and co-workers.
Download package contains two umats, one for basic hypoplasticity (von Wolffersdorff, 1996) and the other for hypoplasticity with small strain stiffness (Niemunis and Herle, 1997).
Interface between umat (Abaqus/Standard) and vumat (Abaqus/Explicit) user defined model standards by Bienen et al. (2014).
Download package of a Incremental Driver single element program by Niemunis (2007, 2014) for running element tests using constitutive models implemented in umat format.
UMAT and Plaxis implementations of SANISAND constitutive model by Dafalias and Manzari (2004).
Download Package of frictional interface model by Stutz et al. (2016, 2017) for granular soils based on Hypoplasticity including interface between UMAT and FRIC ABAQUS standards.
Download package of Clay and Sand hypoplasticity UMAT and Plaxis implementations, including pre-compiled UMAT-Plaxis interface.
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