Scholarlink

<p>Existing theoretical models for three-dimensional orthogonal staggered star honeycomb (OSSH) structures demonstrate inadequate accuracy in predicting mechanical properties. To address this limitation, the calculation models of equivalent Young’s modulus and equivalent Poisson’s ratio were optimized in this study. This optimization considered the strains in compression of longitudinal and diagonal beams, reducing most errors to less than 5%. Then, it was found that the influence of length and thickness parameters on the mechanical properties of the unit cell of OSSH was more significant than that of angle parameters through parameter analysis. Compared to traditional star-shaped honeycomb (SSH) structures, the negative Poisson’s ratio performance mainly depends on the concave angle, and OSSH structures will be more flexible in design. The results of the parameter analysis also indicate that relative density is not the main factor affecting the strength of OSSH, as a result the lightweight and high-strength characteristics can be achieved in OSSH. The traditional three-dimensional star-shaped honeycomb (SSH) usually has a small Young’s modulus; however, this study verifies that the staggered array method can effectively improve the Young’s modulus of OSSH structures through quasi-static compression experiments, which will expand the application range of honeycomb structures. </p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Numerical analysis of three-dimensional star-shaped structures with enhanced mechanical properties

  • 期刊论文

  • 发表日期：

    2025年6月9日

查看全文
  • Baofeng He,
  • Tianjun Gao,
  • Qian Huang,
  • Ao Wang,
  • Jiachun Lin,
  • Zhaoyao Shi

摘要

Existing theoretical models for three-dimensional orthogonal staggered star honeycomb (OSSH) structures demonstrate inadequate accuracy in predicting mechanical properties. To address this limitation, the calculation models of equivalent Young’s modulus and equivalent Poisson’s ratio were optimized in this study. This optimization considered the strains in compression of longitudinal and diagonal beams, reducing most errors to less than 5%. Then, it was found that the influence of length and thickness parameters on the mechanical properties of the unit cell of OSSH was more significant than that of angle parameters through parameter analysis. Compared to traditional star-shaped honeycomb (SSH) structures, the negative Poisson’s ratio performance mainly depends on the concave angle, and OSSH structures will be more flexible in design. The results of the parameter analysis also indicate that relative density is not the main factor affecting the strength of OSSH, as a result the lightweight and high-strength characteristics can be achieved in OSSH. The traditional three-dimensional star-shaped honeycomb (SSH) usually has a small Young’s modulus; however, this study verifies that the staggered array method can effectively improve the Young’s modulus of OSSH structures through quasi-static compression experiments, which will expand the application range of honeycomb structures.