...
首页> 外文期刊>Composite Structures >Multiscale modeling of carbon nanotube reinforced concrete
【24h】

Multiscale modeling of carbon nanotube reinforced concrete

机译:碳纳米管增强混凝土的多尺度建模

获取原文
获取原文并翻译 | 示例
           

摘要

The present paper proposes a hierarchical multiscale approach in order to evaluate the nonlinear constitutive behavior of concrete reinforced with carbon nanotubes (CNTs). To this purpose, representative volume elements, consistent to the microstructural topology of the material, are constructed and analyzed using finite elements. As the dimensions of the CNTs and those of a typical mesoscale concrete RVE differ by orders of magnitude, a hierarchical multiscale analysis strategy is implemented to pass information through scales with different RVEs assigned at each scale of separation. Both elastic and inelastic analyses are performed on all scales for various CNT weight fractions, defining a different nonlinear constitutive stress-strain behavior at each scale of separation. It is shown that the proposed computational approach can be used alternatively to corresponding costly experiments in order to accurately evaluate the nonlinear constitutive behavior of such complex materials.
机译:为了评估碳纳米管(CNTs)增强混凝土的非线性本构行为,本文提出了一种分层的多尺度方法。为此,使用有限元构造和分析与材料的微观结构拓扑一致的代表性体积元。由于CNT的尺寸和典型的中尺度混凝土RVE的尺寸相差一个数量级,因此实施了分层的多尺度分析策略,以使信息通过各个分隔级别分配了不同RVE的尺度。在各种尺度上对各种CNT重量分数进行了弹性和非弹性分析,从而在每个分离尺度上定义了不同的非线性本构应力-应变行为。结果表明,所提出的计算方法可以替代相应的昂贵实验,以准确评估此类复杂材料的非线性本构行为。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号