TY - JOUR
AU - Saksala, Timo
AU - Kouhia, Reijo
PY - 2023/12/29
Y2 - 2024/04/13
TI - A damage-plasticity model for brittle materials based on an approximation of Rankine type of failure criterion
JF - Rakenteiden Mekaniikka
JA - RakMek
VL - 56
IS - 4
SE - Djebar Baroudin ja Jari Laukkasen muistonumero
DO - 10.23998/rm.137249
UR - https://rakenteidenmekaniikka.journal.fi/article/view/137249
SP - 136-145
AB - <p>A damage-plasticity model for tensile failure analyses of brittle materials is developed. The stress states leading to a failure (inelastic strains and damage) are indicated by a rounded approximation of the Rankine criterion. This approximation is expressed in terms of the stress invariants avoiding thus the need of coordinate transformations and eigenvalue solutions required by the classical Rankine criterion. The model is formulated with the effective stress space approach, i.e. the return mapping is first performed in the global effective stress space and then the damage update is performed independently of the plasticity part. The model is consistently linearized, and, finally, some demonstrative simulations of a tensile test on a rock-like material are carried out. </p>
ER -