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3D Pixel Mechanical Metamaterials.

Fei Pan1, Yilun Li1, Zhaoyu Li1

  • 1Institute of Solid Mechanics, Beihang University (BUAA), Beijing, 100191, China.

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|May 11, 2019
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Summary
This summary is machine-generated.

A novel mechanical pixel (MP) array design enables metamaterials to achieve large deformations and enhanced shape-reconfigurability. This pixelated approach simplifies design and unlocks new possibilities for advanced programmable materials.

Keywords:
deformationmetamaterialspixelationprogrammabilityshape-reconfigurability

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Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Physics

Background:

  • Metamaterials offer unique properties but are limited by interconnected structures, hindering applications requiring large deformation and reconfigurability.
  • Existing metamaterial designs face challenges in achieving rich programmability and efficient shape adaptation.

Purpose of the Study:

  • To introduce an innovative mechanical pixel (MP) array design strategy for metamaterials.
  • To overcome the limitations of interconnected structures in metamaterials for enhanced functionality.

Main Methods:

  • Experimental testing, theoretical analysis, and numerical simulations were employed to validate the MP array design.
  • The strategy was demonstrated using a multistable metamaterial system.

Main Results:

  • The MP array design enables metamaterials to form and reconfigure 3D morphologies by adjusting MP heights.
  • Significant enhancements in macroscopic shear deformation, mechanical programmability, shape-reconfigurability, adaptability, and reusable shock-resistance were observed.
  • The number of programmable displacement-force curves and stable morphologies increased exponentially with the MP array design.

Conclusions:

  • The mechanical pixel array design strategy significantly enhances metamaterial capabilities, including programmability and reconfigurability.
  • This pixelated approach simplifies the mechanical design and property prediction of metamaterials.
  • The strategy holds potential for advancing a wide range of versatile metamaterial applications.