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Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Computational Physics

Background:

  • Metamaterials exhibit unique properties due to their engineered architecture.
  • Controlling the deformation and switching properties of metamaterials is challenging due to non-linear mechanical behavior.

Purpose of the Study:

  • To develop a computational and experimental strategy for exploring the folding behavior of 3D prismatic building blocks.
  • To investigate the controllable multifunctionality and complex mechanical behavior of these building blocks.

Main Methods:

  • Utilizing local actuation patterns to probe and visualize the mechanical responses.
  • Employing computational modeling and experimental validation to analyze folding behavior.
  • Assembling building blocks into larger metamaterial structures.

Main Results:

  • Identified a large, discrete set of mechanically stable configurations arising from elastic energy minima.
  • Demonstrated that these building blocks can be assembled into metamaterials with similar multistable behavior.
  • Established that the underlying mechanical principles are scale-independent.

Conclusions:

  • The developed strategy effectively explores complex mechanical behaviors in 3D metamaterials.
  • The scale-independent nature of the multistable behavior makes these designs versatile.
  • Potential applications include reconfigurable acoustic waveguides, microelectronic mechanical systems, and energy storage.