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August 3, 2026Advanced Materials TechnologiesOpen Access

Strain‐Activated Mechanical Metamaterial With Programmable Dual‐Phase Stiffness and Enhanced Energy Absorption

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Authors

RYRamin Yousefi-NooraiePolitecnico di MilanoRLRomain LemoinePolitecnico di MilanoMGMario GuaglianoPolitecnico di Milano

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Overview

Randomized trial demonstrates enhanced energy absorption in mechanical metamaterials, indicating potential for innovative applications.

Key Points

  • The research aims to develop a metamaterial that exhibits programmable dual-phase stiffness and enhanced energy absorption.
  • Proposed a unit cell design leveraging auxetic principles with internal locking arms.
  • Used finite-element simulations and design-of-experiments to identify key geometrical parameters.
  • Manufactured prototypes to validate the computational models and test the dual-phase response.
  • Demonstrated two stable states of elastic modulus under compression with effective stiffness transitions.
  • Showed strong agreement between experimental data and finite element simulations.
  • Confirmed usability through testing of 4 × 4 lattice structures that exhibited expected mechanical behavior.

Cite This Study

Yousefi-Nooraie et al. (2026) studied this question.

synapsesocial.com/papers/6a70406d75942ff7265e56e2https://doi.org/10.1002/admt.71216
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