The paper presents an investigation about a magneto-rheological elastomeric (MRE) pad to be adopted as seismic semi-active isolator for lightweight structures. MRE pad may change its stiffness if immersed in a magnetic field. This characteristic allows to real time shift the fundamental frequency of the isolated structure. In this way it is possible to drive away the structure fundamental frequency from the exciting frequencies and therefore to reduce accelerations induced by the ground motion. The isolator includes a ball transfer unit (BTU) to sustain the vertical load so that MRE pad must only exert horizontal restoring forces and it may have a slender geometry without concern regarding buckling
A vibration isolator based on magneto-rheological elastomer / Brancati, Renato; DI MASSA, Giandomenico; Pagano, Stefano. - 47:(2017), pp. 483-490. ( The First International Conference of IFToMM Italy (IFIT 2016) Vicenza (Italia) December 1-2, 2016) [10.1007/978-3-319-48375-7_52].
A vibration isolator based on magneto-rheological elastomer
BRANCATI, RENATO;DI MASSA, GIANDOMENICO;PAGANO, STEFANO
2017
Abstract
The paper presents an investigation about a magneto-rheological elastomeric (MRE) pad to be adopted as seismic semi-active isolator for lightweight structures. MRE pad may change its stiffness if immersed in a magnetic field. This characteristic allows to real time shift the fundamental frequency of the isolated structure. In this way it is possible to drive away the structure fundamental frequency from the exciting frequencies and therefore to reduce accelerations induced by the ground motion. The isolator includes a ball transfer unit (BTU) to sustain the vertical load so that MRE pad must only exert horizontal restoring forces and it may have a slender geometry without concern regarding bucklingI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
