This work presents a robust and mesh-independent implementation of an elasto-plastic constitutive model at large strains, appropriate for structured soils, into a Particle Finite Element code specially developed for geotechnical simulations. The constitutive response of structured soils is characterized by softening and, thus, leading to strain localization. Strain localization poses two numerical challenges: mesh dependence of the solution and computability of the solution. The former is mitigated by employing a non-local integral type regularization whereas an Implicit-Explicit integration scheme is used to enhance the computability. The good performance of these techniques is highlighted in the simulation of the cone penetration test in undrained conditions.

Monforte, L., Ciantia, M., Carbonell, J., Arroyo, M., Gens, A. (2021). A Nonlocal Elasto-Plastic Model for Structured Soils at Large Strains for the Particle Finite Element Method. In M. Barla, A. Di Donna, D. Sterpi (a cura di), Challenges and Innovations in Geomechanics Proceedings of the 16th International Conference of IACMAG - Volume 2 (pp. 544-551). Springer Science and Business Media Deutschland GmbH [10.1007/978-3-030-64518-2_64].

A Nonlocal Elasto-Plastic Model for Structured Soils at Large Strains for the Particle Finite Element Method

Ciantia M. O.;
2021

Abstract

This work presents a robust and mesh-independent implementation of an elasto-plastic constitutive model at large strains, appropriate for structured soils, into a Particle Finite Element code specially developed for geotechnical simulations. The constitutive response of structured soils is characterized by softening and, thus, leading to strain localization. Strain localization poses two numerical challenges: mesh dependence of the solution and computability of the solution. The former is mitigated by employing a non-local integral type regularization whereas an Implicit-Explicit integration scheme is used to enhance the computability. The good performance of these techniques is highlighted in the simulation of the cone penetration test in undrained conditions.
Capitolo o saggio
Constitutive modeling; Nonlocal elasto-plasticity; PFEM; Structured soils;
English
Challenges and Innovations in Geomechanics Proceedings of the 16th International Conference of IACMAG - Volume 2
Barla, M; Di Donna, A; Sterpi, D
2021
9783030645175
126 LNCE
Springer Science and Business Media Deutschland GmbH
544
551
Monforte, L., Ciantia, M., Carbonell, J., Arroyo, M., Gens, A. (2021). A Nonlocal Elasto-Plastic Model for Structured Soils at Large Strains for the Particle Finite Element Method. In M. Barla, A. Di Donna, D. Sterpi (a cura di), Challenges and Innovations in Geomechanics Proceedings of the 16th International Conference of IACMAG - Volume 2 (pp. 544-551). Springer Science and Business Media Deutschland GmbH [10.1007/978-3-030-64518-2_64].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/445479
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