Can the thickness of a thin inclusion (in a matrix material) be made so small (though retaining sufficient stiffness and matrix adhesion) to generate ‘in practice’ a stress state in agreement with the analytical (square-root singular) solution for a rigid line inclusion (so-called ‘stiffener’) embedded in a linear elastic plate? Can this inhomogeneous stress state be generated for tensile loading parallel to the stiffener? We provide a direct and positive answer to these questions, by showing howto produce elastic materials containing thin inclusions and by providing photoelastic investigation of these structures. The experiments fully validate the stress state calculated for an elastic plate containing a rigid (finite-length) line inclusion, until a distance from the inclusion tip on the order of its thickness, corresponding to a stress concentration up to seven.
|Titolo:||The stress intensity near a stiffener disclosed by photoelasticity.|
|Autori:||Noselli, Giovanni; Dal Corso, Francesco; Bigoni, Davide|
|Titolo del periodico:||INTERNATIONAL JOURNAL OF FRACTURE|
|Anno di pubblicazione:||2010|
|Codice identificativo Scopus:||2-s2.0-77956371334|
|Codice identificativo ISI:||WOS:000281681200010|
|Appare nelle tipologie:||03.1 Articolo su rivista (Journal article)|