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<p>Inspired by the unique topology of zeolites, earlier studies explored their potential for enhanced load-bearing and energy-absorbing capabilities. This study introduces a novel and facile approach for designing and fabricating zeolite-inspired interconnected structures using additive-manufactured multi-material polymer composites. By strategically replacing high-stress-concentration regions with soft Material A (Thermoplastic Polyurethane) embedded within a hard Material B (Polylactic Acid) matrix, we optimize stress distribution and mechanical performance. Finite element analysis (FEA) under uniaxial compression identifies high-stress regions, guiding the replacement of soft material. The resulting multi-material composites demonstrate remarkable improvements: specific yield strength increases by 396.56% and 630.64% in zeolite ATN (α<sub>2</sub>) and BEC (β<sub>2</sub>) structures, respectively, compared to their soft counterparts. In addition, specific resilience improves by 79.85% and 215.00% in ATN (<i>α</i><sub>2</sub>) and BEC (<i>β</i><sub>3</sub>) composites relative to the hard structures. This work leverages fused deposition modeling (FDM)-based additive manufacturing to pioneer a multi-material design strategy, enabling the development of advanced, resilient, and topologically optimized composite structures. By altering load paths and reducing stress concentrations, this technique opens new avenues for engineering high-performance materials tailored to demanding applications. </p>

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Zeolites topology inspired multi-material-based 3D printing of porous composite structures with high resilience

  • 期刊论文

  • 发表日期：

    2025年4月27日

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  • Himanshu Singh,
  • Aelton B. Santos,
  • Diptava Das,
  • Rushikesh S. Ambekar,
  • Cristiano F. Woellner,
  • Satish Nagarajaiah,
  • Chandra Sekhar Tiwary

摘要

Inspired by the unique topology of zeolites, earlier studies explored their potential for enhanced load-bearing and energy-absorbing capabilities. This study introduces a novel and facile approach for designing and fabricating zeolite-inspired interconnected structures using additive-manufactured multi-material polymer composites. By strategically replacing high-stress-concentration regions with soft Material A (Thermoplastic Polyurethane) embedded within a hard Material B (Polylactic Acid) matrix, we optimize stress distribution and mechanical performance. Finite element analysis (FEA) under uniaxial compression identifies high-stress regions, guiding the replacement of soft material. The resulting multi-material composites demonstrate remarkable improvements: specific yield strength increases by 396.56% and 630.64% in zeolite ATN (α2) and BEC (β2) structures, respectively, compared to their soft counterparts. In addition, specific resilience improves by 79.85% and 215.00% in ATN (α2) and BEC (β3) composites relative to the hard structures. This work leverages fused deposition modeling (FDM)-based additive manufacturing to pioneer a multi-material design strategy, enabling the development of advanced, resilient, and topologically optimized composite structures. By altering load paths and reducing stress concentrations, this technique opens new avenues for engineering high-performance materials tailored to demanding applications.