Mechanics of Single- and Multi-Wall Carbon Nanotubes

单壁和多壁碳纳米管的力学

• 批准号: 0099909
• 负责人: YongGang Huang
• 金额: $ 19万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-06-15 至 2005-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0099909&HistoricalAwards=false
• 关键词: Mechanics; Single; Multi; Wall; Carbon

MECHANICS OF SINGLE- AND MULTI-WALL CARBON NANOTUBESAbstractCarbon nanotubes exhibit superior mechanical properties with extraordinarilyhigh stiffness and strength. There are, however, virtually no continuumstudies of carbon nanotubes because it is generally thought that continuummechanics theories are not applicable on the atomic or nanometer scales, andone must rely on atomistic studies. The atomistic studies, on the otherhand, have some limitations on both the time and length scales forapplications involving a large number of carbon nanotubes.The objective of the work is to develop a continuum theory for carbon nanotubes that incorporates the interatomic potential of carbon. We will adopt a systematic approach to link the continuum and atomistic scales. The strain energy density on the continuum level will be obtained by averaging the bond energy in carbon bonds on the atomic level, which will lead to a continuum constitutive model for carbon nanotubes. The nanoscale continuum will then be validated by the atomistic studies.

单壁和多壁碳纳米纤维纳米吸收纳米管的力学具有出色的机械性能，具有极高的刚度和强度。 但是，几乎没有碳纳米管的连续研究，因为人们通常认为连续性力学理论不适用于原子或纳米尺度上，并且必须依靠原子研究。 另一方面，原子研究在涉及大量碳纳米管的时间和长度尺度上都存在一些局限性。该作品的目的是为含有碳间潜力的碳纳米管开发连续理论。 我们将采用一种系统的方法将连续性和原子量表联系起来。连续水平上的应变能密度将通过在原子水平上平均碳键中的键能获得，这将导致碳纳米管的连续构成模型。 然后，纳米级连续体将通过原子研究来验证。