Effective elastic stiffness of 2D materials containing nanovoids of arbitrary shape

This paper aims to determine the in plane effective elastic properties of two-dimensional (2D) materials containing nanovoids of arbitrary shape. To achieve this objective, the complex variable and the associated conformal mapping techniques are used to solve the heterogeneity problem of a single nanovoid with arbitrary shape embedded in an infinite matrix. In this particular problem, to capture the edge and size effects of nanovoids, line elasticity model is used for the void boundary. The results of the heterogeneity problem are then used to determine the elastic properties of 2D nanoporous materials by applying the dilute and Mori-Tanaka schemes. Applications to the case of aluminum and the study the shape and size effects are also presented. (C) 2020 Elsevier Ltd. All rights reserved.