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Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing

Characterizing Dissipative Elastic Metamaterials Produced by Additive Manufacturing

Published on: June 28, 2024

Programmable mechanical metamaterials.

Bastiaan Florijn¹, Corentin Coulais¹, Martin van Hecke¹

¹Huygens-Kamerling Onnes Lab, Universiteit Leiden, Postbus 9504, 2300 RA Leiden, The Netherlands.

Physical Review Letters

|November 8, 2014

Summary

This summary is machine-generated.

Researchers developed programmable mechanical metamaterials that exhibit tunable responses like hysteresis under compression. This is achieved by controlling lateral confinement, enabling novel material functionalities.

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Area of Science:

Materials Science
Mechanical Engineering
Physics

Background:

Mechanical metamaterials offer unique properties not found in natural materials.
Controlling material behavior under stress is crucial for advanced applications.

Purpose of the Study:

To engineer mechanical metamaterials with programmable responses to uniaxial compression.
To investigate the role of lateral confinement in dictating material behavior.
To develop a model and design strategy for these confined metamaterials.

Main Methods:

Fabrication of mechanical metamaterials with broken rotational symmetry.
Application of controlled lateral confinement during uniaxial compression.
Development of a soft mechanism model to describe material response.
Exploration of inhomogeneous confinement for advanced functionalities.

Main Results:

Demonstrated programmable monotonic, nonmonotonic, and hysteretic behaviors.
Identified highly nonlinear coupling of deformations due to broken symmetry.
Validated the soft mechanism model for predicting material mechanics.
Achieved multistability and giant hysteresis using inhomogeneous confinement.

Conclusions:

Lateral confinement is a powerful tool for programming the mechanical response of metamaterials.
The developed design strategy enables the creation of metamaterials with tailored hysteretic and multistable properties.
These findings open avenues for novel applications in adaptive structures and energy dissipation.