Computation of schenberg response function by using finite element modelling

• Main Author: Frajuca, C.
• Publication Date: 2016
• Other Authors: Bortoli, F. S., Magalhaes, N. S. [UNIFESP]
• Format: Conference object
• Language: eng
• Source: Repositório Institucional da UNIFESP
• dARK ID: ark:/48912/001300002gpnq
• Download full: http://dx.doi.org/10.1088/1742-6596/716/1/012016; http://repositorio.unifesp.br/handle/11600/49354
• topic: Gravitational-Wave Antenna

Schenberg is a detector of gravitational waves resonant mass type, with a central frequency of operation of 3200 Hz. Transducers located on the surface of the resonating sphere, according to a distribution half-dodecahedron, are used to monitor a strain amplitude. The development of mechanical impedance matchers that act by increasing the coupling of the transducers with the sphere is a major challenge because of the high frequency and small in size. The objective of this work is to study the Schenberg response function obtained by finite element modeling (FEM). Finnaly, the result is compared with the result of the simplified model for mass spring type system modeling verifying if that is suitable for the determination of sensitivity detector, as the conclusion the both modeling give the same results.