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FIP ARTICOLI TECNICI S.R.L.
Italy
The SI-series elastomeric isolators consist of alternate layers of steel and elastomer connected by curing. Their behaviour can be modelled as linear, based on equivalent stiffness and the equivalent viscous damping coefficient. Usually they are made of high-damping elastomeric mixtures, i.e. with equivalent viscous damping coefficient between 10 and 15% and shear deformation of 100% Experimental hysteretic cycles of a SI isolator at a 0.5 Hz frequency and shear deformation ± 100% Preparation, at FIP INDUSTRIALE laboratory, of an experimental test on two SI isolators of diameter 1150 mm. A SI isolator installed at the "Da Luz" hospital of Lisbon (Portugal).
Request for a quoteFIP ARTICOLI TECNICI S.R.L.
Italy
They are divided into two categories: ELASTOMERIC Elastomeric isolators SI Elastomeric isolators with lead core LRB SLIDING Curved surface sliders FIP, FIP-D Flat surface sliders with dampersi VEL, VEP, VOP, VOTP, VELOP, VELOTP
Request for a quoteFIP ARTICOLI TECNICI S.R.L.
Italy
Curved surface sliders use gravity as a recentering force; the operating principle is the same as the pendulum. Energy dissipation is ensured by the friction of the main sliding surface. The parameters for the bilinear constitutive bond depend on the bending radius and friction coefficient. They are divided into two types, the FIP and FIP-D series, respectively with one or 2 primary sliding surfaces that allow for horizontal displacement. In the case of very wide displacements we recommend to use double curved sliding isolators (FIP-D), which permit to reduce plan dimensions. Experimental hysteretic cycles of a FIP isolator. A FIP-D isolator during testing at the SRMD laboratory of the University of California in San DIEGO. A FIP-D isolator installed in the building "Le Betulle" of Castel di Sangro (AQ).
Request for a quoteFIP ARTICOLI TECNICI S.R.L.
Italy
These isolators are the combination of a bearing and dampers in a single device; the latter are typically hysteretic dampers of steel and/or fluid viscous dampers. As such, they are characterized by a high damping capacity. The bearing can be multidirectional or unidirectional. Isolators can also include shock transmitters or mechanical fuse restraints. Experimental hysteretic cycles of a flat sliding isolator with steel hysteretic dampers. Installation of a flat sliding isolator with steel hysteretic dampers, at the Santuario 'Madonna delle Lacrime' of Siracusa. Flat sliding isolators with steel hysteretic dampers, installed in the railway lines "Caracas-Cua" and "La Encrucijada-Puerto Cabello", Venezuela.
Request for a quoteFIP ARTICOLI TECNICI S.R.L.
Italy
LRB isolators are elastomeric isolators with a cylindrical-shaped core of lead. The plasticization of lead permits to obtain an equivalent viscous damping coefficient up to approximately 30%. The constitutive bond of LRB isolators is bilinear; for design purposes it is possible to use equivalent non-linear or linear models, according to regulatory provisions. Experimental hysteretic cycles of an LRB isolator at a 0.5 Hz frequency and cutting deformation ± 100%. Vibrating table tests on an LRB isolator at the National Technical University of Athens (Greece). LRB isolators installed in the office building "La Torre" of Ancona.
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