An innovative procedure to improve integration algorithm for modified Cam-Clay plasticity model

Author(s)

Sanei, Manouchehr ^[1] ; Duran, Omar ^[2] ; Devloo, Philippe R. B. ^[3] ; Santos, Erick S. R. ^{[4, 5]}

Affiliation

^[1] Univ Estadual Campinas, Mech Engn Dept FEM, Petr Engn Div, Campinas, SP - Brazil

^[2] Univ Paris Est, Ctr Enseignement & Rech Math & Calcul Sci, CERMICS ENPC, Paris - France

^[3] Univ Estadual Campinas, Civil Engn Dept FEC, Campinas, SP - Brazil

^[4] Petrobras SA, Res & Dev Ctr Cenpes, Rio De Janeiro, RJ, Brazil.Sanei, Manouchehr, Univ Estadual Campinas, Mech Engn Dept FEM, Petr Engn Div, Campinas, SP - Brazil

^[5] Petrobras SA, Res & Dev Ctr Cenpes, Rio De Janeiro, RJ - Brazil

• Document type: Journal article
• Source: COMPUTERS AND GEOTECHNICS; v. 124, AUG 2020.
• Web of Science Citations: 0

Abstract

An innovative numerical scheme to improve the integration algorithm for critical state elastoplasticity is presented and detailed with special consideration to the modified Cam-Clay model. The scheme is based on a rotation of the principal stresses and represents the elastoplastic model in a rotated Haigh-Westergaard space. Such an approach allows the calculation of modified Cam-Clay tobe computationally stable and easy to implement. The validity of the proposed scheme is verified by comparing the numerical results with analytic solutions. (AU)

• FAPESP's process: 17/15736-3 - Engineering Research Centre in Reservoir and Production Management
• Grantee: Denis José Schiozer
• Support Opportunities: Research Grants - Research Centers in Engineering Program