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<p>Triply periodic minimal surface (TPMS)-based porous structures have attracted significant attention due to their exceptional performance and lightweight properties. To fully exploit the advantages of this structural archetype, this paper investigates the topology optimization design and crashworthiness of TPMS structures. A topological design methodology for single-cell TPMS configurations is proposed, focusing on structural lightweighting. The optimized topology configuration for TMPS structure was fabricated using 316L stainless steel, and its mechanical properties were validated through experimental testing and finite element analysis. When characterized using a level set constant <i>C</i> = 0 and a surface thicknesses <i>t</i> = 1&#xa0;mm, comparative analysis revealed that the optimized TPMS structure achieved substantial improvements in crashworthiness, including a 20.41% increase in specific energy absorption (SEA), a 5.26% increase in peak crash force (PCF), a 15.58% increase in mean crash force (MCF), and a 7.796% improvement in crash force efficiency (CFE). These results demonstrate the efficacy of the proposed optimization methodology in enhancing both the lightweight properties and crashworthiness of TPMS structures, underscoring its potential for advanced engineering applications.</p>

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Topology optimization and mechanical performance analysis of P-type triply periodic minimal surface structures

  • 期刊论文

  • 发表日期：

    2025年2月22日

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  • Fangyi Li,
  • Yuming Yin,
  • Rong Zeng,
  • Dachang Zhu

摘要

Triply periodic minimal surface (TPMS)-based porous structures have attracted significant attention due to their exceptional performance and lightweight properties. To fully exploit the advantages of this structural archetype, this paper investigates the topology optimization design and crashworthiness of TPMS structures. A topological design methodology for single-cell TPMS configurations is proposed, focusing on structural lightweighting. The optimized topology configuration for TMPS structure was fabricated using 316L stainless steel, and its mechanical properties were validated through experimental testing and finite element analysis. When characterized using a level set constant C = 0 and a surface thicknesses t = 1 mm, comparative analysis revealed that the optimized TPMS structure achieved substantial improvements in crashworthiness, including a 20.41% increase in specific energy absorption (SEA), a 5.26% increase in peak crash force (PCF), a 15.58% increase in mean crash force (MCF), and a 7.796% improvement in crash force efficiency (CFE). These results demonstrate the efficacy of the proposed optimization methodology in enhancing both the lightweight properties and crashworthiness of TPMS structures, underscoring its potential for advanced engineering applications.