Discretely assembled mechanical metamaterials
Name
eabc9943.full.pdf
Description
Published version
Size
1.9 MB
Format
Adobe PDF
Checksum (MD5)
210d5990f4b35f0023dbc113ebe06a57
Author(s)
Jenett, Benjamin
Cameron, Christopher
Tourlomousis, Filippos
Rubio, Alfonso Parra
Ochalek, Megan
Gershenfeld, Neil
Date Issued
2020
Journal
Science Advances
Publisher
American Association for the Advancement of Science (AAAS)
Version
Final published version
Abstract
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.
MIT Department
Massachusetts Institute of Technology. Center for Bits and Atoms
Terms of Use
Creative Commons Attribution NonCommercial License 4.0
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1126/sciadv.abc9943
