RT info:eu-repo/semantics/article
T1 Phase-field modeling of fused silica cone-crack Vickers indentation
A1 Tomić, Zoran
A1 Jukić, Krešimir
A1 Jarak, Tomislav
A1 Fabijanić, Tamara Aleksandrov
A1 Tonković, Zdenko
K1 Phase field modelling
K1 Modeling
K1 Modelado
K1 Hardness
K1 Dureza
K1 Fused silica
K1 Silica
K1 Glass
K1 Ceramic materials
K1 Materials science
K1 Vickers indentation
K1 Indentación Vickers
K1 Cone crack
K1 Grietas cónicas
K1 3312 Tecnología de Materiales
K1 3312.06 Vidrio
K1 3312.03 Materiales Cerámicos
AB In this paper, a 3D phase-field model for brittle fracture is applied for analyzing the complex fracture patterns appearing during the Vickers indentation of fused silica. Although recent phase-field models for the fracture caused by the indentation loading have been verified by some simpler academic axis-symmetric examples, a proper validation of such models is still missing. In addition, heavy computational costs, and a complicated compression stress field under the indenter, which demands different energy decompositions, have been identified as the most important impediments for the successful application of the phase-field method for such problems. An adaptive strategy is utilized for reducing the computational costs, and some modifications are introduced, which enable an accurate simulation of the Vickers indentation fracture. Here, the fracture initiation ring outside the contact zone is detected by using different energy decompositions, and the dominant cone-crack formation under the Vickers indenter is observed. Different contact conditions are investigated. The proposed model is validated by experimental measurements, and a quantitative and qualitative comparison between experimental and numerical results is conducted.
PB MDPI
SN 2079-4991
YR 2022
FD 2022
LK https://uvadoc.uva.es/handle/10324/61912
UL https://uvadoc.uva.es/handle/10324/61912
LA eng
NO Nanomaterials, 2022, Vol. 12, Nº. 14, 2356
NO Producción Científica
DS UVaDOC
RD 11-jul-2024