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The buckling of single-layer MoS_2 under uniaxial compression

机译:单层MoS_2在单轴压缩下的屈曲

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Molecular dynamics simulations are performed to investigate the buckling of single-layer MoS_2 under uniaxial compression. The strain rate is found to have an important effect on the critical buckling strain, where higher strain rate leads to larger critical strain. The critical strain is almost temperature-independent for T < 50 K, and it increases with increasing temperature for T > 50 K owing to the thermal vibration assisted healing mechanism on the buckling deformation. The length-dependence of the critical strain from our simulations is in good agreement with the prediction of the Euler buckling theory.
机译:进行分子动力学模拟以研究单层MoS_2在单轴压缩下的屈曲。发现应变率对临界屈曲应变具有重要影响,其中较高的应变率导致较大的临界应变。 T <50 K时,临界应变几乎与温度无关,而T> 50 K时,临界应变随着温度的升高而增加,这归因于热振动辅助的屈曲变形修复机制。我们的模拟得出的临界应变的长度相关性与欧拉屈曲理论的预测非常吻合。

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