| 金雨林， 赵军华.CNT网络材料微观结构变化的数值模拟研究[J].轻工机械,2023,41(5):1-6 |
| CNT网络材料微观结构变化的数值模拟研究 |
| Numerical Simulation Research on Microstructure Changes of CNT Network Materials |
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| DOI：10.3969/j.issn.1005 2895.2023.05.001 |
| 中文关键词: 碳纳米管 CNT网络材料 微观结构 粗粒化分子动力学 取向程度 |
| 英文关键词:CNT（Carbon Nano Tube） CNT network material microscopic mechanism coarse grained molecular dynamics orientation degree |
| 基金项目:国家自然科学基金（11972171）；国家自然科学基金（11572140）；江苏省研究生科研创新计划资助项目（KYCY20_1831）。 |
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| 中文摘要: |
| 为探究力学载荷作用对碳纳米管（carbon nano tube，CNT）网络材料微观结构的影响，笔者建立了CNT网络材料的粗粒化模型，运用粗粒化分子动力学模拟方法对CNT网络在力学载荷作用下的微观结构变化行为进行仿真分析。结果表明：CNT网络材料的取向程度在拉伸应变增加初期增大速率较快，后续随着拉伸应变的增加取向程度趋于平稳，最终会趋近于稳定值0.95；在压缩载荷作用下，CNT网络材料的取向程度会随着应变的增大而减小，且最后减小至0.15；力学载荷速率不会影响CNT网络取向程度的变化规律。 |
| 英文摘要: |
| In order to explore the effect of mechanical load on the microstructure of CNT network materials, a coarse grained model of CNT network materials was established. The microstructure change behavior simulation analysis was performed on CNT network model by the coarse grained molecular dynamics simulation. The results show that the orientation increase degree of CNT network materials is relatively faster at the initial stage of tensile strain increase, then tends to be stable with the increase of tensile strain, and eventually approaches to a constant value (0.95); under compression load, the orientation degree of CNT network materials decreases with the increase of strain, and finally decreases to 0.15; the mechanical loading rate will not affect the change rule of orientation degree of CNT network. |
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