Vibration Analysis of Circular Janus MoSSe Plates
Xinjie Liu, Lifeng Wang
Abstract: The vibration behavior of Janus monolayer molybdenum sulfoselenide(MoSSe)was studied based on molecular dynamics(MD)simulations and the finite element method(FEM). MoSSe plates were simulated by FEM through the incorporation of intrinsic strain caused by lattice mismatch to the double-layer plate model. The vibrations of circular MoSSe plates with free boundaries and a clamped edge were determined by MD simulations and FEM. In addition, the effects of plate size, strain, and pressure on the natural frequency of the plates were investigated. The results showed that the natural frequency of the circular MoSSe plate with free boundaries gradually decreased with increasing plate size. Furthermore, a significant discontinuity in frequency was observed due to bowl and tube warpage when the diameter reached 8.6 nm. The MD simulation and FEM calculation results were consistent in terms of the natural frequencies of the circular MoSSe plates of different sizes. In addition, the effects of strain and pressure on the natural frequency determined by the two methods were consistent for small deformations. The vibration of the MoSSe plate could be well predicted by the double-layer plate model.
文章链接：https://dx.doi.org/10.3969/j.issn.1003-7985.2023.03.002
