Evolution of critical buckling conditions in imperfect bilayer shells through residual swelling
We propose and investigate a minimal mechanism that makes use of differential swelling to modify the critical buckling conditions of elastic bilayer shells, as measured by the knockdown factor. Our shells contain an engineered defect at the north pole and are made of two layers of different crosslin...
Published in: | Soft Matter |
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Cambridge, ROYAL SOC CHEMISTRY
2019
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Online Access: | https://doi.org/10.1039/c9sm00901a http://infoscience.epfl.ch/record/268788 |
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ftinfoscience:oai:infoscience.epfl.ch:268788 2023-05-15T17:39:48+02:00 Evolution of critical buckling conditions in imperfect bilayer shells through residual swelling Lee, Anna Yan, Dong Pezzulla, Matteo Holmes, Douglas P. Reis, Pedro M. 2019-08-13T17:24:01Z https://doi.org/10.1039/c9sm00901a http://infoscience.epfl.ch/record/268788 unknown Cambridge, ROYAL SOC CHEMISTRY isi:000477986500008 doi:10.1039/c9sm00901a http://infoscience.epfl.ch/record/268788 http://infoscience.epfl.ch/record/268788 Text 2019 ftinfoscience https://doi.org/10.1039/c9sm00901a 2023-02-13T22:53:14Z We propose and investigate a minimal mechanism that makes use of differential swelling to modify the critical buckling conditions of elastic bilayer shells, as measured by the knockdown factor. Our shells contain an engineered defect at the north pole and are made of two layers of different crosslinked polymers that exchange free molecular chains. Depending on the size of the defect and the extent of swelling, we can observe either a decreasing or increasing knockdown factor. FEM simulations are performed using a reduced model for the swelling process to aid us in rationalizing the underlying mechanism, providing a qualitative agreement with experiments. We believe that the working principle of our mechanism can be extended to bimetallic shells undergoing variations in temperature and to shells made of pH-responsive gels, where the change in knockdown factor could be changed dynamically. Text North Pole EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) North Pole Soft Matter 15 30 6134 6144 |
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Open Polar |
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EPFL Infoscience (Ecole Polytechnique Fédérale Lausanne) |
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ftinfoscience |
language |
unknown |
description |
We propose and investigate a minimal mechanism that makes use of differential swelling to modify the critical buckling conditions of elastic bilayer shells, as measured by the knockdown factor. Our shells contain an engineered defect at the north pole and are made of two layers of different crosslinked polymers that exchange free molecular chains. Depending on the size of the defect and the extent of swelling, we can observe either a decreasing or increasing knockdown factor. FEM simulations are performed using a reduced model for the swelling process to aid us in rationalizing the underlying mechanism, providing a qualitative agreement with experiments. We believe that the working principle of our mechanism can be extended to bimetallic shells undergoing variations in temperature and to shells made of pH-responsive gels, where the change in knockdown factor could be changed dynamically. |
format |
Text |
author |
Lee, Anna Yan, Dong Pezzulla, Matteo Holmes, Douglas P. Reis, Pedro M. |
spellingShingle |
Lee, Anna Yan, Dong Pezzulla, Matteo Holmes, Douglas P. Reis, Pedro M. Evolution of critical buckling conditions in imperfect bilayer shells through residual swelling |
author_facet |
Lee, Anna Yan, Dong Pezzulla, Matteo Holmes, Douglas P. Reis, Pedro M. |
author_sort |
Lee, Anna |
title |
Evolution of critical buckling conditions in imperfect bilayer shells through residual swelling |
title_short |
Evolution of critical buckling conditions in imperfect bilayer shells through residual swelling |
title_full |
Evolution of critical buckling conditions in imperfect bilayer shells through residual swelling |
title_fullStr |
Evolution of critical buckling conditions in imperfect bilayer shells through residual swelling |
title_full_unstemmed |
Evolution of critical buckling conditions in imperfect bilayer shells through residual swelling |
title_sort |
evolution of critical buckling conditions in imperfect bilayer shells through residual swelling |
publisher |
Cambridge, ROYAL SOC CHEMISTRY |
publishDate |
2019 |
url |
https://doi.org/10.1039/c9sm00901a http://infoscience.epfl.ch/record/268788 |
geographic |
North Pole |
geographic_facet |
North Pole |
genre |
North Pole |
genre_facet |
North Pole |
op_source |
http://infoscience.epfl.ch/record/268788 |
op_relation |
isi:000477986500008 doi:10.1039/c9sm00901a http://infoscience.epfl.ch/record/268788 |
op_doi |
https://doi.org/10.1039/c9sm00901a |
container_title |
Soft Matter |
container_volume |
15 |
container_issue |
30 |
container_start_page |
6134 |
op_container_end_page |
6144 |
_version_ |
1766140581838323712 |