Abstract:
Mode I fracture behavior of edge- and centrally-cracked nanobeams is analyzed by employing both stress-driven non-local theory of elasticity and Bernoulli–Euler beam theory. The present formulation implements the size-dependency experimentally observed at material micro- and nanoscale, by assuming a non-local constitutive law, that relates the strain to the stress in each material point of the body, through an integral convolution and a kernel. It is observed that the energy release rate decreases by increasing the nonlocality, showing the superior fracture performance of nanobeams with respect to large-scale beams.
Keywords:
energy release rate, nanobeam, stress-driven, non-local integral model, stress intensity factor
Affiliations:
| Vantadori S. | - | other affiliation |
| Luciano R. | - | Università degli Studi di Napoli "Parthenope" (IT) |
| Scorza D. | - | other affiliation |
| Darban H. | - | IPPT PAN |
