Un Modello per l’Analisi di Isolatori Elastomerici Rinforzati con Fibre di Carbonio

The mechanical behavior of rectangular elastomeric isolation bearings with bidirectional fiber reinforcing elements is analytically investigated. In contrast to the steelreinforced isolator, which is usually assumed to be rigid both in extension and in flexure, the fiber-reinforced isolator is assumed to be flexible in extension and with no stiffness in flexure. The solution for infinitely long rectangular isolators with in plane isotropic fiber reinforcing (Kelly 1999) and an original hypothesis on the displacement field are used to find displacements and stress fields. The compression modulus and the bending modulus are finally evaluated. The obtained results are then compared with the results obtained via a different approach by Tsai and Kelly 2002 for rectangular isolators with isotropic fiber reinforcing.