Phase field models of interface failure for bone application - evaluation of open-source implementations
Gustafsson, Anna LU
and Isaksson, Hanna
LU
(2022)
In Theoretical and Applied Fracture Mechanics
121.
- Abstract
Bone is a composite material where tubular osteon structures surrounded by thin interfaces reinforce the tissue at the microscale. These interfaces provide alternative weak paths for crack growth and give rise to potent extrinsic toughening mechanisms. Numerical models can help to gain a deeper understanding of fracture resistance in bone, however, capturing the interface mechanics is key. For this purpose, the phase field method for fracture is appealing due to its capability of capturing complex cracking phenomena. Still, it is far from well-established in the field of biomechanics. In this study, we evaluated a selection of recent open-source implementations of the phase field method to find the best approach for simulating crack... (More)
Bone is a composite material where tubular osteon structures surrounded by thin interfaces reinforce the tissue at the microscale. These interfaces provide alternative weak paths for crack growth and give rise to potent extrinsic toughening mechanisms. Numerical models can help to gain a deeper understanding of fracture resistance in bone, however, capturing the interface mechanics is key. For this purpose, the phase field method for fracture is appealing due to its capability of capturing complex cracking phenomena. Still, it is far from well-established in the field of biomechanics. In this study, we evaluated a selection of recent open-source implementations of the phase field method to find the best approach for simulating crack growth in bone tissue. We also proposed a new method for correcting the interface fracture toughness in a phase field model. The selected implementations were compared using benchmark tests, including single edge notched tensile specimens with and without interfaces, as well as models representing typical bone geometries. We found the quasi-Newton monolithic solvers to be superior both in terms of computational speed and robustness compared to the evaluated staggered solvers. We also showed that correcting the fracture toughness of the interface is key for simulating crack patterns that are consistent with analytical predictions from linear elastic fracture mechanics.
(Less)
- author
- Gustafsson, Anna
LU
and Isaksson, Hanna
LU
- organization
- publishing date
- 2022
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Biomechanics, Cement line, Crack propagation, FEA, Fracture, Osteon
- in
- Theoretical and Applied Fracture Mechanics
- volume
- 121
- article number
- 103432
- publisher
- Elsevier
- external identifiers
-
- scopus:85131797040
- ISSN
- 0167-8442
- DOI
- 10.1016/j.tafmec.2022.103432
- project
- Fracture mechanics of bone tissue – impact of age and disease
- language
- English
- LU publication?
- yes
- id
- 24452896-7966-467d-98cf-d44dd287cba4
- date added to LUP
- 2022-08-26 14:48:38
- date last changed
- 2023-10-23 14:00:55
@article{24452896-7966-467d-98cf-d44dd287cba4,
abstract = {{<p>Bone is a composite material where tubular osteon structures surrounded by thin interfaces reinforce the tissue at the microscale. These interfaces provide alternative weak paths for crack growth and give rise to potent extrinsic toughening mechanisms. Numerical models can help to gain a deeper understanding of fracture resistance in bone, however, capturing the interface mechanics is key. For this purpose, the phase field method for fracture is appealing due to its capability of capturing complex cracking phenomena. Still, it is far from well-established in the field of biomechanics. In this study, we evaluated a selection of recent open-source implementations of the phase field method to find the best approach for simulating crack growth in bone tissue. We also proposed a new method for correcting the interface fracture toughness in a phase field model. The selected implementations were compared using benchmark tests, including single edge notched tensile specimens with and without interfaces, as well as models representing typical bone geometries. We found the quasi-Newton monolithic solvers to be superior both in terms of computational speed and robustness compared to the evaluated staggered solvers. We also showed that correcting the fracture toughness of the interface is key for simulating crack patterns that are consistent with analytical predictions from linear elastic fracture mechanics.</p>}},
author = {{Gustafsson, Anna and Isaksson, Hanna}},
issn = {{0167-8442}},
keywords = {{Biomechanics; Cement line; Crack propagation; FEA; Fracture; Osteon}},
language = {{eng}},
publisher = {{Elsevier}},
series = {{Theoretical and Applied Fracture Mechanics}},
title = {{Phase field models of interface failure for bone application - evaluation of open-source implementations}},
url = {{http://dx.doi.org/10.1016/j.tafmec.2022.103432}},
doi = {{10.1016/j.tafmec.2022.103432}},
volume = {{121}},
year = {{2022}},
}