Stability characteristics of single-layered silicon carbide nanosheets under uniaxial compression

• Stability characteristics of single-layered silicon carbide nanosheets are studied using a 3D finite element model.
• The critical buckling forces of zigzag nanosheets are slightly more than those of armchair ones.
• Increasing the side length will decrease the stability of nanosheets.
• The buckling force of SLSiCs is strongly dependent on boundary conditions.

The buckling behavior of single-layered silicon carbide nanosheets (SLSiCNSs) is investigated by employing an atomistic finite element model. Preserving the discrete nature of nanosheets, the beam elements are used to model the Si–C bounds. The effects of aspect ratio and boundary conditions on the stability of zigzag and armchair SLSiCNSs have been studied. Based on the results, it is observed that the buckling forces of small sheets are strongly size-dependent. However, the size-dependent behavior will diminish for larger sheets. Comparing the buckling force of armchair and zigzag nanosheets with same geometries and boundary conditions shows that the buckling force is independent of chirality.

A 3D finite element model has been proposed for single-layered silicon carbide nanosheets (SLSiCs) in which the bonds and atoms have been modeled using beam and mass elements. The buckling behavior of single-layered silicon carbide nanosheets (SLSiCNSs) is investigated by employing this atomistic finite element model.Figure optionsDownload as PowerPoint slide