TY  - JOUR
A1  - Bruno, Giovanni
A1  - Kachanov, Mark
A1  - Sevostianov, Igor
A1  - Shyam, Amit
T1  - Micromechanical modeling of non-linear stress-strain behavior of polycrystalline microcracked materials under tension
JF  - Acta materialia
N2  - The stress-strain behavior of microcracked polycrystalline materials (such as ceramics or rocks) under conditions of tensile, displacement-controlled, loading is discussed. Micromechanical explanation and modeling of the basic features, such as non-linearity and hysteresis in stress-strain curves, is developed, with stable microcrack propagation and "roughness" of intergranular cracks playing critical roles. Experiments involving complex loading histories were done on large- and medium grain size beta-eucryptite ceramic. The model is shown to reproduce the basic features of the observed stress-strain curves. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
KW  - Nonlinearity
KW  - Stress-strain relations
KW  - Hysteresis
KW  - Tension
KW  - Ceramics
KW  - Rocks
KW  - Polycrystals
Y1  - 2018
U6  - https://doi.org/10.1016/j.actamat.2018.10.024
SN  - 1359-6454
SN  - 1873-2453
VL  - 164
SP  - 50
EP  - 59
PB  - Elsevier
CY  - Oxford
ER  -