Mechanics of Damping in Nanostructured Materials

纳米结构材料的阻尼力学

• 批准号: 0600583
• 负责人: Dong Qian
• 金额: $ 20万
• 依托单位: University of Cincinnati Main Campus
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2006
• 资助国家: 美国
• 起止时间: 2006-09-15 至 2009-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0600583&HistoricalAwards=false
• 关键词: Mechanics; Damping; Nanostructured; Materials

Title of the NSF Proposal: Mechanics of Damping in Nanostructured MaterialsIn this proposal, an integrated modeling and experimental approach is proposed to have a focused study on the damping properties of nanostructured materials, such as carbon nanotubes (CNT) and CNT reinforce polymer composites. Understanding the origin of damping due to the dramatic reduction in the length scale is essential for developing applications such as nanoscale sensors and actuators, nanocomposites, NEMS, and components for nanoelectronics. With the dramatic increase in the surface-to-volume ratio at the nanometer length scale, a critical aspect of the research is to study the effects of nanoscale surface and interface. These effects become important as nanostructured materials are integrated with other materials or systems that are of different types and operate at different spatial and temporal scales. More specifically, a multiscale modeling and simulation approach will be developed for studying damping properties in CNT and CNT-based polymer composites; The modeling study will then be combined with an experimental program to explore various intrinsic and extrinsic parameters, such as structure, defect, temperature, humidity, and interface binding, that are critical for understanding the damping mechanism in CNT and CNT related composites. Finally, The research results obtained will be fully incorporated into an innovative educational program that targets at a wide range of audiences, including gradates, undergraduates, K-12 and underrepresented groups. Since the topic of this project is also of the key interest of both research communities and industries, the societal impact is expected through benefiting the nation's economy.

NSF提案题目：纳米结构材料的阻尼力学在该提案中，提出了一种集成的建模和实验方法来重点研究纳米结构材料的阻尼特性，如碳纳米管（CNT）和CNT增强聚合物复合材料。了解由于长度尺度急剧减小而产生的阻尼的来源对于开发纳米级传感器和执行器、纳米复合材料、NEMS和纳米电子元件等应用至关重要。随着纳米尺度表面体积比的急剧增加，研究纳米尺度表面和界面的影响是研究的一个关键方面。当纳米结构材料与不同类型的其他材料或系统集成并在不同的空间和时间尺度上运行时，这些效应变得重要。更具体地说，将开发一种多尺度建模和仿真方法来研究碳纳米管和碳纳米管基聚合物复合材料的阻尼特性；然后将模型研究与实验程序相结合，探索各种内在和外在参数，如结构、缺陷、温度、湿度和界面结合，这些参数对于理解碳纳米管和碳纳米管相关复合材料的阻尼机制至关重要。最后，获得的研究成果将被充分纳入一个创新的教育计划，针对广泛的受众，包括研究生，本科生，K-12和代表性不足的群体。由于该项目的主题也是研究界和工业界的主要兴趣，因此预计通过造福国家经济来产生社会影响。