A new approach to modelling closed cell nanofoams and analysis of their mechanical properties

A new approach which is based on the discreet element method and can be used for modelling closed cell nanofoams is revealed in this study. Atomistic models of closed cell nanofoams with five different types of porosity are generated with the help of a proposed modelling technique in order to examine the role of the porosity. Following the generation of atomistic models, the mechanical behaviour is investigated by performing molecular dynamic analyses. The findings signify that such mechanical properties as elastic moduli, ultimate and yield stresses rise with decreasing porosity for both loading types. Additionally, dislocation extraction algorithm (DXA) analysis is carried out to observe the evolution of the deformation mechanism of atomistic models. Dislocation analyses show that the Shockley partial dislocation plays a huge role in the deformation mechanism.