<p>Carbon fiber epoxy composites containing graphene oxide have high shape resilience but feature complex compositions and structures. Theoretical research on their mechanical properties and damage mechanisms is quite scarce. To this end, the current study generated the random fiber distribution corresponding to the composite material to represent its volume element. The macromechanical properties and microdamage modes of the material were predicted. The coupling matrix derived through micromechanical modeling and analysis was incorporated into the proposed mathematical model of the shape recovery force of the composite material. The experimental and theoretically predicted values of the shape recovery (restoring) force were 7.9 and 8.02 N, proving the proposed model’s feasibility and good accuracy. The results provide theoretical guidance for designing smart composite materials that require high shape resilience.</p>

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Multiscale Modeling Damage Study and Shape Recovery Force Analysis of GO-CF/EP Composites

  • Y. Y. Zhang,
  • P. P. Zhao,
  • Y. Q. Ma,
  • X. J. Wu,
  • S. H. Liu,
  • Y. T. Hou

摘要

Carbon fiber epoxy composites containing graphene oxide have high shape resilience but feature complex compositions and structures. Theoretical research on their mechanical properties and damage mechanisms is quite scarce. To this end, the current study generated the random fiber distribution corresponding to the composite material to represent its volume element. The macromechanical properties and microdamage modes of the material were predicted. The coupling matrix derived through micromechanical modeling and analysis was incorporated into the proposed mathematical model of the shape recovery force of the composite material. The experimental and theoretically predicted values of the shape recovery (restoring) force were 7.9 and 8.02 N, proving the proposed model’s feasibility and good accuracy. The results provide theoretical guidance for designing smart composite materials that require high shape resilience.