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<p>Nacre exhibits excellent mechanical properties attributed to the staggered alignment of inorganic minerals and bio-organic materials. This study aims to understand how stress transfers from macro-scale loading conditions to the staggered architecture, revealing multiple stress transfer modes in nacre-like composites under off-axis tensile loading conditions. We propose an innovative off-axis tension-shear chain model, which predicts the trend of the equivalent modulus. Systematic optimization reveals a counter-intuitive result: the equivalent modulus at a certain angle can be smaller than the equivalent moduli in both principal directions, and this phenomenon differs from the monotonic behavior commonly observed in continuous fiber composite materials.</p>

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The stress transfer mechanism of nacre-like composites under off-axis tensile loading

  • 期刊论文

  • 发表日期：

    2025年5月15日

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  • Peng Jiang,
  • Guangming Xia,
  • Shi Bai,
  • Dongfang Xu,
  • Jixiang Qi,
  • Xun Xiong,
  • Xianben Ren,
  • Ying Li

摘要

Nacre exhibits excellent mechanical properties attributed to the staggered alignment of inorganic minerals and bio-organic materials. This study aims to understand how stress transfers from macro-scale loading conditions to the staggered architecture, revealing multiple stress transfer modes in nacre-like composites under off-axis tensile loading conditions. We propose an innovative off-axis tension-shear chain model, which predicts the trend of the equivalent modulus. Systematic optimization reveals a counter-intuitive result: the equivalent modulus at a certain angle can be smaller than the equivalent moduli in both principal directions, and this phenomenon differs from the monotonic behavior commonly observed in continuous fiber composite materials.