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Micromechanical modeling and simulation can be employed to investigate the relationships between complex microstructure and damage propagation in composite materials. Such capability could be extremely essential to develop constitutive laws at the appropriate length scale and to explore damage mechanisms for designing damage-tolerant composite materials. However, the microstructural modeling and simulation predictions must be validated against micromechanical testing data. This study presents peridynamic predictions and their comparison against test data concerning micropillar composites with continuous fibers under transverse compression. The micropillar specimens made of IM7/977–3 present debonding and matrix cracking during transverse compressive loading. The PD models are constructed by utilizing the actual topology of fiber-reinforced composite micropillars with two different fiber orientations. These models can help understand basic knowledge of microstructural instabilities, effects of nanovoids, interfacial debonding, and matrix cracking in the development and design of future composite systems.

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Peridynamic Simulations of Damage Initiation and Propagation of Microstructural Experiments

  • 会议论文

  • 发表日期：

    2026年

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  • Mark Flores,
  • Keith Ballard,
  • Olesya Zhupanska,
  • Erdogan Madenci

摘要

Micromechanical modeling and simulation can be employed to investigate the relationships between complex microstructure and damage propagation in composite materials. Such capability could be extremely essential to develop constitutive laws at the appropriate length scale and to explore damage mechanisms for designing damage-tolerant composite materials. However, the microstructural modeling and simulation predictions must be validated against micromechanical testing data. This study presents peridynamic predictions and their comparison against test data concerning micropillar composites with continuous fibers under transverse compression. The micropillar specimens made of IM7/977–3 present debonding and matrix cracking during transverse compressive loading. The PD models are constructed by utilizing the actual topology of fiber-reinforced composite micropillars with two different fiber orientations. These models can help understand basic knowledge of microstructural instabilities, effects of nanovoids, interfacial debonding, and matrix cracking in the development and design of future composite systems.