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碳纳米管填充聚合物的三维建模方法,使用修改的最接近邻近算法.

Junpu Wang1, Xiaozhuang Yue1, Yuxuan Wang1

  • 1College of Mechanical and Electrical Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China.

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一个新的3D模型通过考虑CNT分布,准确模拟碳纳米管 (CNT) 复合材料. 这种先进的建模增强了CNT填充聚合物的机械性质的预测.

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科学领域:

  • 材料科学 材料科学 材料科学
  • 纳米技术 纳米技术
  • 计算力学 计算力学 计算力学

背景情况:

  • 碳纳米管 (CNT) 具有卓越的机械,电和热性能,使其成为高性能复合材料的理想选择.
  • 对CNT-聚合物复合材料的精确机械表征对于其有效应用至关重要.
  • 现有的模型往往简化了聚合物矩阵内的 CNTs 复杂的微观结构.

研究的目的:

  • 开发和验证CNT填充聚合物复合材料的精确3D建模方法.
  • 将微观结构属性和CNT的随机分布纳入模拟中.
  • 准确预测在各种负载条件下CNT复合材料的机械行为.

主要方法:

  • 使用修改的最近邻近算法构建一个代表体积元素 (RVE) 模型.
  • 实施干扰判断方法,以考虑CNT的位置关系.
  • 有限元分析 (FEA) 使用体积平均值来导出应力-应变曲线.

主要成果:

  • 3D模型成功模拟了CNT/环氧树脂复合材料的机械性能.
  • 计算的应力-应变曲线与文献中的实验数据强烈一致.
  • 该模型准确地表示了CNT的随机分布和不同尺寸比.

结论:

  • 拟议的3D建模方法提供了更准确的复合材料中CNT分布的表示.
  • 这种方法提高了CNT填充聚合物的机械性能的预测能力.
  • 该方法具有多功能性,适用于广泛的CNT尺寸比率,改善了现实世界的模型对齐.