论文标题
分子动力学模拟，用于分析机械性能以及石 - 孔的影响以及对碳纳米管增强铁复合材料的影响
Molecular Dynamics Simulation for the Analysis of Mechanical Properties and Effect of Stone-Wales and BiVacancy Defect on Carbon Nanotube Reinforced Iron Composites
论文作者
论文摘要
碳纳米管（CNT）增强金属基质复合材料（MMC）由于对空间和汽车行业的需求而引起了研究人员的注意，因此重量低和高机械性能。铁是所有工程领域中最常用的金属。因此，用CNT加固铁可以减少其所需数量，这可能会由于生产成本降低而产生积极的经济影响。但是，在任何材料的工业应用之前，必须知道在不同条件下的机械性能。在这项研究中，通过分子动力学（MD）模拟研究了用单个，双壁CNT分别用单，双层和三壁CNT加强的铁的机械性能。研究表明，通过将CNT添加到铁中，纯铁的强度和刚度可分别提高80.4％和57.4％。我们还研究了纤维体积百分比和温度对具有单个，双重和三壁碳纳米管的复合材料的机械性能的影响。由于制造过程中的CNT中固有地引入了石 - 孔和两次缺陷，因此在本研究中也研究了它们对机械性能的影响
Carbon nanotube (CNT) reinforced metal matrix composites (MMCs) are gaining the attention of the researchers because of their demand in space and automobile industries for having low weight and high mechanical properties. Iron is the most used metal in all engineering fields. Therefore, reinforcing iron with CNT can reduce its required amount, which might have a positive economic impact due to the reduced cost of production. However, before the industrial application of any material the mechanical properties under different conditions must be known. In this study, the mechanical properties of iron reinforced separately with single, double and triple wall CNTs are investigated by Molecular Dynamics (MD) simulation. The study revealed that the strength and stiffness of pure iron could be enhanced up to 80.4 % and 57.4 %, respectively, by adding CNTs into iron. We also investigated the effect of fiber volume percentage and temperature on the mechanical properties of the composite having single, double and triplewalled carbon nanotubes individually. As the stone-wales and bi-vacancy defects are inherently introduced in CNTs during manufacturing, their effect on mechanical properties are also investigated in the present study
