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<p>A novel hollow optimized simple cubic (SC) lattice structure based on the triply periodic minimal surface (TPMS) geometry was proposed, inspired by bamboo geometry, aiming at enhancing both load bearing and energy absorption properties. Conventional SC lattice structures, despite their high load bearing capability and ease of fabrication, suffer from poor energy absorption performance due to their high stress concentration at the nodes and the induced deformation instability under compressive loads. By integrating the hollow and tapered features of TPMS geometry into the SC lattice, the proposed structure design effectively mitigates these issues, improving energy absorption simultaneously. The effectiveness of this design is demonstrated by finite element (FE) simulations and experimental tests, showcasing significant improvements in energy absorption capacity and strength, particularly after properly adjusting the shape parameters (e.g., <i>C</i> = 0.6). This research provides a promising pathway for developing lightweight, high-performance lattice structures for engineering applications with complex and volatile loading conditions.</p>

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A Hollow Optimized Simple Cubic Lattice Structure Based on the TPMS Geometry

  • 期刊论文

  • 发表日期：

    2025年3月17日

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  • Ze She,
  • Fan Yang,
  • Jiacheng Wu,
  • Pengfei Li,
  • Lingbo Li,
  • Xin Wang,
  • Peng Wang

摘要

A novel hollow optimized simple cubic (SC) lattice structure based on the triply periodic minimal surface (TPMS) geometry was proposed, inspired by bamboo geometry, aiming at enhancing both load bearing and energy absorption properties. Conventional SC lattice structures, despite their high load bearing capability and ease of fabrication, suffer from poor energy absorption performance due to their high stress concentration at the nodes and the induced deformation instability under compressive loads. By integrating the hollow and tapered features of TPMS geometry into the SC lattice, the proposed structure design effectively mitigates these issues, improving energy absorption simultaneously. The effectiveness of this design is demonstrated by finite element (FE) simulations and experimental tests, showcasing significant improvements in energy absorption capacity and strength, particularly after properly adjusting the shape parameters (e.g., C = 0.6). This research provides a promising pathway for developing lightweight, high-performance lattice structures for engineering applications with complex and volatile loading conditions.