Discretely assembled mechanical metamaterials
Mechanical metamaterials offer exotic properties based on local control of cell geometry and their global configuration into structures and mechanisms. Historically, these have been made as continuous, monolithic structures with additive manufacturing, which affords high resolution and throughput, b...
| Main Authors: | , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
American Association for the Advancement of Science (AAAS)
2021
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| Online Access: | https://hdl.handle.net/1721.1/136115 |
| _version_ | 1826212475023917056 |
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| author | Jenett, Benjamin Cameron, Christopher Tourlomousis, Filippos Rubio, Alfonso Parra Ochalek, Megan Gershenfeld, Neil |
| author2 | Massachusetts Institute of Technology. Center for Bits and Atoms |
| author_facet | Massachusetts Institute of Technology. Center for Bits and Atoms Jenett, Benjamin Cameron, Christopher Tourlomousis, Filippos Rubio, Alfonso Parra Ochalek, Megan Gershenfeld, Neil |
| author_sort | Jenett, Benjamin |
| collection | MIT |
| description | Mechanical metamaterials offer exotic properties based on local control of cell geometry and their global configuration into structures and mechanisms. Historically, these have been made as continuous, monolithic structures with additive manufacturing, which affords high resolution and throughput, but is inherently limited by process and machine constraints. To address this issue, we present a construction system for mechanical metamaterials based on discrete assembly of a finite set of parts, which can be spatially composed for a range of properties such as rigidity, compliance, chirality, and auxetic behavior. This system achieves desired continuum properties through design of the parts such that global behavior is governed by local mechanisms. We describe the design methodology, production process, numerical modeling, and experimental characterization of metamaterial behaviors. This approach benefits from incremental assembly, which eliminates scale limitations, best-practice manufacturing for reliable, low-cost part production, and interchangeability through a consistent assembly process across part types. |
| first_indexed | 2024-09-23T15:22:38Z |
| format | Article |
| id | mit-1721.1/136115 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T15:22:38Z |
| publishDate | 2021 |
| publisher | American Association for the Advancement of Science (AAAS) |
| record_format | dspace |
| spelling | mit-1721.1/1361152023-02-22T17:44:31Z Discretely assembled mechanical metamaterials Jenett, Benjamin Cameron, Christopher Tourlomousis, Filippos Rubio, Alfonso Parra Ochalek, Megan Gershenfeld, Neil Massachusetts Institute of Technology. Center for Bits and Atoms Mechanical metamaterials offer exotic properties based on local control of cell geometry and their global configuration into structures and mechanisms. Historically, these have been made as continuous, monolithic structures with additive manufacturing, which affords high resolution and throughput, but is inherently limited by process and machine constraints. To address this issue, we present a construction system for mechanical metamaterials based on discrete assembly of a finite set of parts, which can be spatially composed for a range of properties such as rigidity, compliance, chirality, and auxetic behavior. This system achieves desired continuum properties through design of the parts such that global behavior is governed by local mechanisms. We describe the design methodology, production process, numerical modeling, and experimental characterization of metamaterial behaviors. This approach benefits from incremental assembly, which eliminates scale limitations, best-practice manufacturing for reliable, low-cost part production, and interchangeability through a consistent assembly process across part types. 2021-10-27T20:30:52Z 2021-10-27T20:30:52Z 2020 2021-06-23T19:53:59Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/136115 en 10.1126/sciadv.abc9943 Science Advances Creative Commons Attribution NonCommercial License 4.0 https://creativecommons.org/licenses/by-nc/4.0/ application/pdf American Association for the Advancement of Science (AAAS) Science Advances |
| spellingShingle | Jenett, Benjamin Cameron, Christopher Tourlomousis, Filippos Rubio, Alfonso Parra Ochalek, Megan Gershenfeld, Neil Discretely assembled mechanical metamaterials |
| title | Discretely assembled mechanical metamaterials |
| title_full | Discretely assembled mechanical metamaterials |
| title_fullStr | Discretely assembled mechanical metamaterials |
| title_full_unstemmed | Discretely assembled mechanical metamaterials |
| title_short | Discretely assembled mechanical metamaterials |
| title_sort | discretely assembled mechanical metamaterials |
| url | https://hdl.handle.net/1721.1/136115 |
| work_keys_str_mv | AT jenettbenjamin discretelyassembledmechanicalmetamaterials AT cameronchristopher discretelyassembledmechanicalmetamaterials AT tourlomousisfilippos discretelyassembledmechanicalmetamaterials AT rubioalfonsoparra discretelyassembledmechanicalmetamaterials AT ochalekmegan discretelyassembledmechanicalmetamaterials AT gershenfeldneil discretelyassembledmechanicalmetamaterials |