Modified Critical State Two-Surface Plasticity Model for Sands

Kris Wessel Sørensen, Søren Kjær Nielsen, Amir Shajarati, Johan Clausen

Publikation: Bog/antologi/afhandling/rapportRapportForskning

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This article describes the outline of a numerical integration scheme for a critical state two-surface plasticity model for sands. The model is slightly modified by LeBlanc (2008) compared to the original formulation presented by Manzari and Dafalias (1997) and has the ability to correctly model the stress-strain response of sands. The model is versatile and can be used to simulate drained and undrained conditions, due to the fact that the model can efficiently calculate change in void ratio as well as pore pressure. The objective of the constitutive model is to investigate if the numerical calculations can be performed with the Forward Euler integration scheme. Furthermore, the model is formulated for a single point.
ForlagDepartment of Civil Engineering, Aalborg University
Antal sider10
StatusUdgivet - 2012
NavnDCE Technical Memorandum


  • Two-Surface Plasticity Model
  • Stress-Strain Response
  • Pore Pressure
  • Forward Euler Integration Scheme


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