Optimization of Composite Fracture Properties: Method, Validation, and Applications
A paradigm in nature is to architect composites with excellent material properties compared to its constituents, which themselves often have contrasting mechanical behavior. Most engineering materials sacrifice strength for toughness, whereas natural materials do not face this tradeoff. However, bio...
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| Format: | Article |
| Language: | en_US |
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ASME International
2017
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| Online Access: | http://hdl.handle.net/1721.1/110212 https://orcid.org/0000-0002-8178-6492 https://orcid.org/0000-0002-0611-7846 https://orcid.org/0000-0002-4173-9659 |
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| author | Gu, Grace Xiang Dimas, Leon Sokratis Scheie Qin, Zhao Buehler, Markus J |
| author2 | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Gu, Grace Xiang Dimas, Leon Sokratis Scheie Qin, Zhao Buehler, Markus J |
| author_sort | Gu, Grace Xiang |
| collection | MIT |
| description | A paradigm in nature is to architect composites with excellent material properties compared to its constituents, which themselves often have contrasting mechanical behavior. Most engineering materials sacrifice strength for toughness, whereas natural materials do not face this tradeoff. However, biology's designs, adapted for organism survival, may have features not needed for some engineering applications. Here, we postulate that mimicking nature's elegant use of multimaterial phases can lead to better optimization of engineered materials. We employ an optimization algorithm to explore and design composites using soft and stiff building blocks to study the underlying mechanisms of nature's tough materials. For different applications, optimization parameters may vary. Validation of the algorithm is carried out using a test suite of cases without cracks to optimize for stiffness and compliance individually. A test case with a crack is also performed to optimize for toughness. The validation shows excellent agreement between geometries obtained from the optimization algorithm and the brute force method. This study uses different objective functions to optimize toughness, stiffness and toughness, and compliance and toughness. The algorithm presented here can provide researchers a way to tune material properties for a vast number of engineering problems by adjusting the distribution of soft and stiff materials. |
| first_indexed | 2024-09-23T14:17:18Z |
| format | Article |
| id | mit-1721.1/110212 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T14:17:18Z |
| publishDate | 2017 |
| publisher | ASME International |
| record_format | dspace |
| spelling | mit-1721.1/1102122022-10-01T20:22:25Z Optimization of Composite Fracture Properties: Method, Validation, and Applications Gu, Grace Xiang Dimas, Leon Sokratis Scheie Qin, Zhao Buehler, Markus J Massachusetts Institute of Technology. Department of Civil and Environmental Engineering Massachusetts Institute of Technology. Department of Mechanical Engineering Gu, Grace Xiang Dimas, Leon Sokratis Scheie Qin, Zhao Buehler, Markus J A paradigm in nature is to architect composites with excellent material properties compared to its constituents, which themselves often have contrasting mechanical behavior. Most engineering materials sacrifice strength for toughness, whereas natural materials do not face this tradeoff. However, biology's designs, adapted for organism survival, may have features not needed for some engineering applications. Here, we postulate that mimicking nature's elegant use of multimaterial phases can lead to better optimization of engineered materials. We employ an optimization algorithm to explore and design composites using soft and stiff building blocks to study the underlying mechanisms of nature's tough materials. For different applications, optimization parameters may vary. Validation of the algorithm is carried out using a test suite of cases without cracks to optimize for stiffness and compliance individually. A test case with a crack is also performed to optimize for toughness. The validation shows excellent agreement between geometries obtained from the optimization algorithm and the brute force method. This study uses different objective functions to optimize toughness, stiffness and toughness, and compliance and toughness. The algorithm presented here can provide researchers a way to tune material properties for a vast number of engineering problems by adjusting the distribution of soft and stiff materials. BASF. North American Center for Research on Advanced Materials American Society for Engineering Education. National Defense Science and Engineering Graduate Fellowship 2017-06-23T15:59:15Z 2017-06-23T15:59:15Z 2016-05 2016-04 Article http://purl.org/eprint/type/JournalArticle 0021-8936 1528-9036 http://hdl.handle.net/1721.1/110212 Gu, Grace X. et al. “Optimization of Composite Fracture Properties: Method, Validation, and Applications.” Journal of Applied Mechanics 83.7 (2016): 071006. © 2016 by ASME https://orcid.org/0000-0002-8178-6492 https://orcid.org/0000-0002-0611-7846 https://orcid.org/0000-0002-4173-9659 en_US http://dx.doi.org/10.1115/1.4033381 Journal of Applied Mechanics Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf ASME International American Society of Mechanical Engineers (ASME) |
| spellingShingle | Gu, Grace Xiang Dimas, Leon Sokratis Scheie Qin, Zhao Buehler, Markus J Optimization of Composite Fracture Properties: Method, Validation, and Applications |
| title | Optimization of Composite Fracture Properties: Method, Validation, and Applications |
| title_full | Optimization of Composite Fracture Properties: Method, Validation, and Applications |
| title_fullStr | Optimization of Composite Fracture Properties: Method, Validation, and Applications |
| title_full_unstemmed | Optimization of Composite Fracture Properties: Method, Validation, and Applications |
| title_short | Optimization of Composite Fracture Properties: Method, Validation, and Applications |
| title_sort | optimization of composite fracture properties method validation and applications |
| url | http://hdl.handle.net/1721.1/110212 https://orcid.org/0000-0002-8178-6492 https://orcid.org/0000-0002-0611-7846 https://orcid.org/0000-0002-4173-9659 |
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