Por favor, use este identificador para citar o enlazar este ítem:https://uvadoc.uva.es/handle/10324/61912
Título
Phase-field modeling of fused silica cone-crack Vickers indentation
Año del Documento
2022
Editorial
MDPI
Descripción
Producción Científica
Documento Fuente
Nanomaterials, 2022, Vol. 12, Nº. 14, 2356
Resumo
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.
Materias (normalizadas)
Phase field modelling
Modeling
Modelado
Hardness
Dureza
Fused silica
Silica
Glass
Ceramic materials
Materials science
Materias Unesco
3312 Tecnología de Materiales
3312.06 Vidrio
3312.03 Materiales Cerámicos
Palabras Clave
Vickers indentation
Indentación Vickers
Cone crack
Grietas cónicas
ISSN
2079-4991
Revisión por pares
SI
Patrocinador
Fundación Científica Croata - (projects MultiSintAge, PZS-1 2019-02-4177 and Nano-PM, UIP-2017-05-6538)
Version del Editor
Propietario de los Derechos
© 2022 The Authors
Idioma
eng
Tipo de versión
info:eu-repo/semantics/publishedVersion
Derechos
openAccess
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