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<p>Structures found in nature, refined over millions of years of evolution, exhibit highly efficient load distribution and energy dissipation, providing valuable design cues for engineered cellular materials. This study undertakes an early-stage comparative evaluation of two distinctly architected 3D printed lattices: (i) a biologically derived scaffold reconstructed from micro-computed tomography (<i>µ</i>-CT) imaging of bovine trabecular bone, which exhibits complex porous architectures that share morphological similarities with certain triply periodic minimal surface (TPMS) geometries, and (ii) a computationally generated hybrid TPMS lattice—termed Gyrofis—that integrates Gyroid and Fischer-Koch S surface features. Both configurations were fabricated using ABS-M30i polymer via fused deposition modeling (FDM) and subjected to quasi-static compression tests under varying displacement rates, complemented by finite element (FE) simulations to evaluate stress evolution and failure progression. Quantitative results revealed that the bioinspired scaffold exhibited a ~ 27% increase in ultimate compressive strength (UCS) with strain rate, reaching ~ 39.5&#xa0;MPa, while the Gyrofis lattice delivered a more stable mechanical response with a UCS of ~ 24.8&#xa0;MPa and uniform layer-by-layer collapse, ensuring consistent energy absorption across progressive strain. The enhanced peak stress in the trabecular bone-derived scaffold is attributed to its anisotropic porous network, whereas the Gyrofis structure demonstrated predictable and progressive failure behavior. Although encouraging, these findings are derived from a limited quasi-static dataset. Further investigations under dynamic, fatigue, and multi-material conditions are required to confirm broader applicability in structural, protective, and impact-resistant design contexts.</p> Graphical Abstract <p></p>

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Comparative Mechanical and Energy Absorption Performance of 3D Printed Bioinspired Bovine Bone and Hybrid TPMS Structures

  • 期刊论文

  • 发表日期：

    2025年11月6日

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  • Ali Imran Ansari,
  • Mohammad Mursaleen,
  • Nazir Ahmad Sheikh

摘要

Structures found in nature, refined over millions of years of evolution, exhibit highly efficient load distribution and energy dissipation, providing valuable design cues for engineered cellular materials. This study undertakes an early-stage comparative evaluation of two distinctly architected 3D printed lattices: (i) a biologically derived scaffold reconstructed from micro-computed tomography (µ-CT) imaging of bovine trabecular bone, which exhibits complex porous architectures that share morphological similarities with certain triply periodic minimal surface (TPMS) geometries, and (ii) a computationally generated hybrid TPMS lattice—termed Gyrofis—that integrates Gyroid and Fischer-Koch S surface features. Both configurations were fabricated using ABS-M30i polymer via fused deposition modeling (FDM) and subjected to quasi-static compression tests under varying displacement rates, complemented by finite element (FE) simulations to evaluate stress evolution and failure progression. Quantitative results revealed that the bioinspired scaffold exhibited a ~ 27% increase in ultimate compressive strength (UCS) with strain rate, reaching ~ 39.5 MPa, while the Gyrofis lattice delivered a more stable mechanical response with a UCS of ~ 24.8 MPa and uniform layer-by-layer collapse, ensuring consistent energy absorption across progressive strain. The enhanced peak stress in the trabecular bone-derived scaffold is attributed to its anisotropic porous network, whereas the Gyrofis structure demonstrated predictable and progressive failure behavior. Although encouraging, these findings are derived from a limited quasi-static dataset. Further investigations under dynamic, fatigue, and multi-material conditions are required to confirm broader applicability in structural, protective, and impact-resistant design contexts.

Graphical Abstract