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<p>This study investigates the mechanical and dynamic performance of 3D-printed polylactic acid (PLA) gyroid lattice metamaterials designed for sustainable vibration-control applications. Gyroid specimens with wall thicknesses of 4, 5 and 6&#xa0;mm were fabricated using fused deposition modeling (FDM) and evaluated through three-point bending, uniaxial compression, and free-cantilever vibration tests. Finite-element simulations were performed to validate stress distribution, deformation, and modal response. The 6&#xa0;mm structure achieved the highest compressive strength (24&#xa0;MPa) and energy absorption (2.7&#xa0;MJ m<sup>−&#xa0;3</sup>), whereas the 5&#xa0;mm configuration provided the best damping efficiency (ζ = 0.0217) by balancing stiffness and viscoelastic deformation. Experimental results correlated strongly with FEM stress–strain distribution, confirming the reliability of the developed model. This work establishes a unified experimental–numerical framework for designing biodegradable gyroid metamaterial dampers, demonstrating that geometric tailoring of PLA lattices offers a lightweight, energy-efficient, and environmentally responsible route to vibration mitigation in civil and mechanical systems.</p>

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Mechanical and dynamic behavior of sustainable smart PLA polymeric-based 3D printed gyroid structures for vibration control applications

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年12月30日

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  • A. K. Roopa,
  • Ranjith A.,
  • Shrilaxmi Acharya,
  • Suguna B. Rao,
  • B. O. Naveen

摘要

This study investigates the mechanical and dynamic performance of 3D-printed polylactic acid (PLA) gyroid lattice metamaterials designed for sustainable vibration-control applications. Gyroid specimens with wall thicknesses of 4, 5 and 6 mm were fabricated using fused deposition modeling (FDM) and evaluated through three-point bending, uniaxial compression, and free-cantilever vibration tests. Finite-element simulations were performed to validate stress distribution, deformation, and modal response. The 6 mm structure achieved the highest compressive strength (24 MPa) and energy absorption (2.7 MJ m− 3), whereas the 5 mm configuration provided the best damping efficiency (ζ = 0.0217) by balancing stiffness and viscoelastic deformation. Experimental results correlated strongly with FEM stress–strain distribution, confirming the reliability of the developed model. This work establishes a unified experimental–numerical framework for designing biodegradable gyroid metamaterial dampers, demonstrating that geometric tailoring of PLA lattices offers a lightweight, energy-efficient, and environmentally responsible route to vibration mitigation in civil and mechanical systems.