2019 Fiscal Year Annual Research Report
The role of cracks on the out-of-plane rotations, plasticity and fracture in kirigami structures
| Project/Area Number |
18K18065
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| Research Institution | Japan Agency for Marine-Earth Science and Technology |
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Principal Investigator |
Barbieri Ettore 国立研究開発法人海洋研究開発機構, 付加価値情報創生部門(数理科学・先端技術研究開発センター), 主任研究員 (10816284)
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| Project Period (FY) |
2018-04-01 – 2020-03-31
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| Keywords | kirigami / meshless / large deformations / large rotations / plates / analytical solutions |
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| Outline of Annual Research Achievements |
During this final year of the project, we developed a software capable of simulating the large deformations of a thin plate. This theory includes the large rotations of the plate, typical of kirigami structures. We verified the exactness of the method through comparison with analytical solutions developed during this project.
Also, we implemented a crack algorithm based on the theory of configurational forces, which is a generalisation of the J-integral. We verified the accuracy of the stress intensity factors by comparing with known solutions from fracture mechanics.
A significant achievement was a validation of the theory through experiments conducted by our collaborators on silk-based kirigami polymers. This work appeared on an important journal in the field of materials science.
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