裂纹对石墨烯拉伸力学性能影响的数值模拟

International Conference on Digital Manufacturing and Automation Pub Date : 2012-07-31 DOI:10.1109/ICDMA.2012.133

C. Han, P. He, B. Zheng

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引用次数: 2

摘要

采用Tersoff键序原子间势函数的分子动力学(MD)方法，研究了裂纹长度对石墨烯拉伸力学性能的影响，以及裂纹对石墨烯温度相关性的影响。结果表明，裂纹长度的增加显著降低了材料的抗拉强度和拉伸应变，并对杨氏模量产生影响。同时，裂纹的存在会减弱拉伸强度和拉伸速率对温度的敏感性。

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Numerical Simulation of the Effect of Crack on the Tensile Mechanical Properties of Graphene

Molecular dynamics (MD) method with Tersoff bond-order interatomic potential function is applied to study (1) the impact of the crack-length on the tensile mechanical properties of graphene, and (2) how the crack affects the temperature correlation of graphene. The results show that the increase of crack length significantly reduces the tensile strength and tensile strain, and have an effect on Young's modulus. Meanwhile, the sensitivity of the tensile strength and tensile rate on temperature will be weakened by crack.

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International Conference on Digital Manufacturing and Automation

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