The tensile behaviour and the pure shear behaviour of pristine and perforated single-layer graphene sheets are numeri- cally investigated through a stick-and-spring model including both material and geometric non-linearities. The model is formulated in finite kinematics and the atomic interactions are modelled through the modified Morse potential, tuned with an improved set of parameters. The progression of the failure process of the sheets is numerically reconstructed using the arc-length strategy. The failure profiles are displayed and discussed. A continualization of the obtained results is made. The engineering strains and stresses and the second Piola and Green–Lagrange tensors are computed and com- pared with results given in the literature.

Genoese, A., Genoese, A., Rizzi, N.L., Salerno, G. (2019). On the in-plane failure and post-failure behaviour of pristine and perforated single-layer graphene sheets. MATHEMATICS AND MECHANICS OF SOLIDS, 24, 3418-3443 [10.1177/1081286519833129].

On the in-plane failure and post-failure behaviour of pristine and perforated single-layer graphene sheets

Alessandra Genoese
Membro del Collaboration Group
;
Andrea Genoese
Membro del Collaboration Group
;
Nicola Luigi Rizzi
Membro del Collaboration Group
;
Ginevra Salerno
Membro del Collaboration Group
2019-01-01

Abstract

The tensile behaviour and the pure shear behaviour of pristine and perforated single-layer graphene sheets are numeri- cally investigated through a stick-and-spring model including both material and geometric non-linearities. The model is formulated in finite kinematics and the atomic interactions are modelled through the modified Morse potential, tuned with an improved set of parameters. The progression of the failure process of the sheets is numerically reconstructed using the arc-length strategy. The failure profiles are displayed and discussed. A continualization of the obtained results is made. The engineering strains and stresses and the second Piola and Green–Lagrange tensors are computed and com- pared with results given in the literature.
2019
Genoese, A., Genoese, A., Rizzi, N.L., Salerno, G. (2019). On the in-plane failure and post-failure behaviour of pristine and perforated single-layer graphene sheets. MATHEMATICS AND MECHANICS OF SOLIDS, 24, 3418-3443 [10.1177/1081286519833129].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/350232
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