The work aims to investigate the problems arising from the software finite elements modelling of brittle materials. The most used failure criteria are analyzed, highlighting pros and cons of each of them. In particular an overview of “Mohr-Coulomb”, “Drucker-Prager” and “Concrete Damaged Plasticity” is given. The attention is focused on the “Concrete Damaged Plasticity” failure criterion, born for concrete but well suitable for all brittle materials. It considers the cohesion dependent on plastic deformation and therefore it is possible to evaluate its evolution as the deformation state increases, making the model adherent to the real phenomenon. Concrete Damaged Plasticity criterion also allows an adequate representation of the degrading behavior of the material through the damage function. © 2023 American Institute of Physics Inc.. All rights reserved.
Failure criteria for brittle materials: Problems in FEM simulations
Todisco, Paolo
2023-01-01
Abstract
The work aims to investigate the problems arising from the software finite elements modelling of brittle materials. The most used failure criteria are analyzed, highlighting pros and cons of each of them. In particular an overview of “Mohr-Coulomb”, “Drucker-Prager” and “Concrete Damaged Plasticity” is given. The attention is focused on the “Concrete Damaged Plasticity” failure criterion, born for concrete but well suitable for all brittle materials. It considers the cohesion dependent on plastic deformation and therefore it is possible to evaluate its evolution as the deformation state increases, making the model adherent to the real phenomenon. Concrete Damaged Plasticity criterion also allows an adequate representation of the degrading behavior of the material through the damage function. © 2023 American Institute of Physics Inc.. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
