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<p>This study investigates the anisotropic mechanical behavior and energy dissipation of porcine femoral artery tissue under biaxial stretching. By introducing the reciprocal value of the self-stretching ratio and a direction-dependent standardization factor, a unified framework was established to link Young’s modulus with dissipative behavior in the axial and radial directions. The results revealed distinct directional differences in modulus evolution and energy dissipation, indicating different load-bearing and dissipation-regulation roles of the fibrous structure in the femoral artery. A standardization process was further developed to eliminate the influence of stiffness evolution, enabling a more intrinsic evaluation of dissipative behavior. These findings provide a quantitative basis for understanding the biomechanical characteristics of the femoral artery under biaxial loading.</p>

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A direction-dependent standardization framework for characterizing energy dissipation in porcine femoral artery under biaxial stretching

  • 期刊论文

  • 发表日期：

    2026年7月17日

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  • Renye Cai,
  • Jinchuan Liu,
  • Hao Yang,
  • Jiahua Liu,
  • Jinxing Liang,
  • Canhong Xu,
  • Guanda Yang,
  • Muchao Qu

摘要

This study investigates the anisotropic mechanical behavior and energy dissipation of porcine femoral artery tissue under biaxial stretching. By introducing the reciprocal value of the self-stretching ratio and a direction-dependent standardization factor, a unified framework was established to link Young’s modulus with dissipative behavior in the axial and radial directions. The results revealed distinct directional differences in modulus evolution and energy dissipation, indicating different load-bearing and dissipation-regulation roles of the fibrous structure in the femoral artery. A standardization process was further developed to eliminate the influence of stiffness evolution, enabling a more intrinsic evaluation of dissipative behavior. These findings provide a quantitative basis for understanding the biomechanical characteristics of the femoral artery under biaxial loading.