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arXiv 1408.0436cond-mat.mtrl-sci
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单层MoS2的快速单轴压缩

A Fast Uniaxial Compression of the Single-Layer MoS2

Jin-Wu Jiang

摘要:

欧拉屈曲定理指出,在静态压缩过程中,薄板的屈曲临界应变是长度的反平方函数。然而,这个定理在动力学过程中的适用性是不清楚的,所以我们进行分子动力学模拟来检查的情况下,单层二硫化钼的快速压缩的欧拉屈曲定理的适用性。我们发现,在这种动力学过程中,欧拉屈曲定理不适用,因为在具有许多波纹的屈曲系统中,屈曲临界应变变成了与长度无关的常数。然而,欧拉屈曲定理,可以恢复在这个动力学过程中,限制定理的一个单独的波纹屈曲结构。

英文摘要:

The Euler buckling theorem states that the buckling critical strain is an inverse square function of the length for a thin plate in the static compression process. However, the suitability of this theorem in the dynamical process is unclear, so we perform molecular dynamics simulations to examine the applicability of the Euler buckling theorem in case of a fast compression of the single-layer MoS2. We find that the Euler buckling theorem is not applicable in such dynamical process, as the buckling critical strain becomes a length-independent constant in the buckled system with many ripples. However, the Euler buckling theorem can be resumed in this dynamical process after restricting the theorem to an individual ripple in the buckled structure.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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