Mechanics and Fracture of Structured Pillar Interfaces

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Mechanics and Fracture of Structured Pillar Interfaces. / Heide-Jørgensen, Simon; Budzik, Michal Kazimierz; Turner, Kevin.

I: Journal of the Mechanics and Physics of Solids, Bind 137, 103825, 04.2020.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Harvard

Heide-Jørgensen, S, Budzik, MK & Turner, K 2020, 'Mechanics and Fracture of Structured Pillar Interfaces', Journal of the Mechanics and Physics of Solids, bind 137, 103825. https://doi.org/10.1016/j.jmps.2019.103825

APA

Heide-Jørgensen, S., Budzik, M. K., & Turner, K. (2020). Mechanics and Fracture of Structured Pillar Interfaces. Journal of the Mechanics and Physics of Solids, 137, [103825]. https://doi.org/10.1016/j.jmps.2019.103825

CBE

Heide-Jørgensen S, Budzik MK, Turner K. 2020. Mechanics and Fracture of Structured Pillar Interfaces. Journal of the Mechanics and Physics of Solids. 137:Article 103825. https://doi.org/10.1016/j.jmps.2019.103825

MLA

Vancouver

Heide-Jørgensen S, Budzik MK, Turner K. Mechanics and Fracture of Structured Pillar Interfaces. Journal of the Mechanics and Physics of Solids. 2020 apr;137. 103825. https://doi.org/10.1016/j.jmps.2019.103825

Author

Heide-Jørgensen, Simon ; Budzik, Michal Kazimierz ; Turner, Kevin. / Mechanics and Fracture of Structured Pillar Interfaces. I: Journal of the Mechanics and Physics of Solids. 2020 ; Bind 137.

Bibtex

@article{b98ec7fb6c62422d95b9c9ca6d6fc781,
title = "Mechanics and Fracture of Structured Pillar Interfaces",
abstract = "Material architecture and geometry provide an opportunity to alter the fracture response of materials without changing the composition or bonding. Here, concepts for using geometry to enhance fracture resistance are established through experiments and analysis of the fracture of elastic-brittle, polymer specimens with pillar-structures along the fracture plane. Specifically, we investigate the fracture response of double cantilever beam specimens with an array of pillars between the upper and lower beams. In the absence of pillars, unstable crack growth and rapid catastrophic failure occur in the double cantilever specimens tested in displacement control. Introducing pillars at the interface by removing material via laser cutting yields a discontinuous interface and leads to a more gradual fracture process and an increase in the work of fracture. The pillar geometry affects the failure load and, notably, increasing the slenderness of the pillars leads to higher critical failure loads due to greater load sharing. The effect of pillar geometry on fracture is established through experiments and analysis, including analytical modeling and finite element simulations. An analytical model that includes the macro-scale response of the beam and the micro-scale response of the pillars is presented and describes the key effects of pillar geometry on fracture response.",
keywords = "Architected materials, Finite element analysis, Heterogeneities, Mechanical metamaterials, Toughness",
author = "Simon Heide-J{\o}rgensen and Budzik, {Michal Kazimierz} and Kevin Turner",
year = "2020",
month = apr,
doi = "10.1016/j.jmps.2019.103825",
language = "English",
volume = "137",
journal = "Journal of the Mechanics and Physics of Solids",
issn = "0022-5096",
publisher = "Pergamon Press",

}

RIS

TY - JOUR

T1 - Mechanics and Fracture of Structured Pillar Interfaces

AU - Heide-Jørgensen, Simon

AU - Budzik, Michal Kazimierz

AU - Turner, Kevin

PY - 2020/4

Y1 - 2020/4

N2 - Material architecture and geometry provide an opportunity to alter the fracture response of materials without changing the composition or bonding. Here, concepts for using geometry to enhance fracture resistance are established through experiments and analysis of the fracture of elastic-brittle, polymer specimens with pillar-structures along the fracture plane. Specifically, we investigate the fracture response of double cantilever beam specimens with an array of pillars between the upper and lower beams. In the absence of pillars, unstable crack growth and rapid catastrophic failure occur in the double cantilever specimens tested in displacement control. Introducing pillars at the interface by removing material via laser cutting yields a discontinuous interface and leads to a more gradual fracture process and an increase in the work of fracture. The pillar geometry affects the failure load and, notably, increasing the slenderness of the pillars leads to higher critical failure loads due to greater load sharing. The effect of pillar geometry on fracture is established through experiments and analysis, including analytical modeling and finite element simulations. An analytical model that includes the macro-scale response of the beam and the micro-scale response of the pillars is presented and describes the key effects of pillar geometry on fracture response.

AB - Material architecture and geometry provide an opportunity to alter the fracture response of materials without changing the composition or bonding. Here, concepts for using geometry to enhance fracture resistance are established through experiments and analysis of the fracture of elastic-brittle, polymer specimens with pillar-structures along the fracture plane. Specifically, we investigate the fracture response of double cantilever beam specimens with an array of pillars between the upper and lower beams. In the absence of pillars, unstable crack growth and rapid catastrophic failure occur in the double cantilever specimens tested in displacement control. Introducing pillars at the interface by removing material via laser cutting yields a discontinuous interface and leads to a more gradual fracture process and an increase in the work of fracture. The pillar geometry affects the failure load and, notably, increasing the slenderness of the pillars leads to higher critical failure loads due to greater load sharing. The effect of pillar geometry on fracture is established through experiments and analysis, including analytical modeling and finite element simulations. An analytical model that includes the macro-scale response of the beam and the micro-scale response of the pillars is presented and describes the key effects of pillar geometry on fracture response.

KW - Architected materials

KW - Finite element analysis

KW - Heterogeneities

KW - Mechanical metamaterials

KW - Toughness

U2 - 10.1016/j.jmps.2019.103825

DO - 10.1016/j.jmps.2019.103825

M3 - Journal article

VL - 137

JO - Journal of the Mechanics and Physics of Solids

JF - Journal of the Mechanics and Physics of Solids

SN - 0022-5096

M1 - 103825

ER -