This page is a part of a research project www.soilmodels.info. The aim of this page is to provide user defined subroutine umat for the hypoplastic constitutive models, together with an interface for PLAXIS user defined subroutine UsrMod.
This site is part of the soilmodels.info project. When using implementations from soilmodels.info in your research, please cite it as: G. Gudehus, A. Amorosi, A. Gens, I. Herle, D. Kolymbas, D. Mašín, D. Muir Wood, R. Nova, A. Niemunis, M. Pastor, C. Tamagnini, and G. Viggiani. The soilmodels.info project. International Journal for Numerical and Analytical Methods in Geomechanics, 32(12):1571-1572, 2008. [Letter PDF]