• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Composite Structures >Investigation on design parameters of single-walled carbon nanotube reinforced nanocomposites under impact loads
【24h】

Investigation on design parameters of single-walled carbon nanotube reinforced nanocomposites under impact loads

机译：冲击载荷下单壁碳纳米管增强纳米复合材料设计参数的研究

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Multi-scale material modeling is applied to investigate the effect of major design parameters of reinforcing agents in single-walled carbon nanotube (SWCNT) reinforced nanocomposites in impact loads. The influence of diameter, chirality and volume fraction (VF) of SWCNTs on impact behavior of different representative volume elements (RVEs) of nanocomposites is studied. SWCNTs are modeled through beam elements in space frame structures in finite element modeling (FEM) software based on their atomic structures in molecular mechanics. The RVEs are composed of various modeled SWCNTs embedded in an elastic medium as polymeric matrix. The various RVEs are exposed to a tensile impact load and the obtained responses are analyzed to evaluate the effective design parameters of SWCNTs in the nanocom-posite structures. The results in the form of strain energy density and axial strain oscillations of RVEs in a time period after impact demonstrate a great improvement in the impact behavior of nanocomposites due to adding SWCNTs in matrix. Applying SWCNTs with smaller diameter in RVEs causes a better impact strength in nanocomposites. In design procedure of nanocomposites subject to the impact loads, it is better to concentrate on the size and the volume fraction of applied CNTs instead of their chirality.
机译：应用多尺度材料模型研究了单壁碳纳米管（SWCNT）增强纳米复合材料中增强剂主要设计参数在冲击载荷下的影响。研究了SWCNTs的直径，手性和体积分数（VF）对纳米复合材料不同代表体积元素（RVE）的冲击行为的影响。基于碳纳米管的原子结构，通过有限元建模（FEM）软件通过空间框架结构中的梁单元对SWCNT进行建模。 RVE由嵌入在弹性介质中作为聚合物基质的各种模拟SWCNT组成。各种RVE承受拉伸冲击载荷，并对获得的响应进行分析，以评估纳米复合结构中SWCNT的有效设计参数。冲击后一段时间内，RVE的应变能密度和轴向应变振荡形式的结果表明，由于在基体中添加了SWCNT，纳米复合材料的冲击行为有了很大的改善。在RVE中使用较小直径的SWCNT会在纳米复合材料中产生更好的冲击强度。在承受冲击载荷的纳米复合材料的设计过程中，最好将注意力集中在所施加CNT的尺寸和体积分数上，而不是它们的手性。

著录项

  • 来源
    《Composite Structures》 |2013年第4期|253-260|共8页
  • 作者

    S.M.R. Khalili; A. Haghbin;

  • 作者单位

    Center of Excellence for Research in Advanced Materials and Structures, Faculty of Mechanical Engineering, K.N. Toosi University of Technology, Tehran, Iran,Faculty of Mechanical Engineering, K.N. Toosi University of Technology, Tehran 19991-43344, Iran;

    Center of Excellence for Research in Advanced Materials and Structures, Faculty of Mechanical Engineering, K.N. Toosi University of Technology, Tehran, Iran;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    nanocomposites; carbon nanotubes; impact behavior; multiscale modeling; chirality;

    机译：纳米复合材料碳纳米管;冲击行为;多尺度建模手性;

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