Open AccessFormulation of a Basic Constitutive Model for Fine - Grained Soils Using the Hypoplastic Framework
Author(s) -
Filip Gago,
Alessandro Valletta,
Juraj Mužík
Publication year - 2021
Publication title -
civil and environmental engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.251
H-Index - 3
eISSN - 2199-6512
pISSN - 1336-5835
DOI - 10.2478/cee-2021-0047
Subject(s) - constitutive equation , viscoplasticity , geotechnical engineering , simple (philosophy) , mathematics , geology , finite element method , engineering , structural engineering , philosophy , epistemology
A hypoplastic approach to constitutive modelling was developed by Kolymbas 1996 considering a non-linear tensor function in the form of strain and stress rate. However, the implicit formulation of the hypoplastic model with indirect material parameters severely limits its applicability to real-world geotechnical problems. In many cases, the numerical analysis of geotechnical problems relies on simple elastoplastic constitutive models that cannot model a wide range of soil response aspects. One promising paradigm of constitutive modelling in geotechnics is hypoplasticity, but many of the hypoplastic models belong to advanced models. In the article, we present the simple hypoplastic model as an alternative to the widely used Mohr-Coulomb elastoplastic model.