@article {Miccoli:2016:0736-2935:3594,
title = "Simplified methodology for pump acoustic field analysis: the effect of different excitation boundary conditions",
journal = "INTER-NOISE and NOISE-CON Congress and Conference Proceedings",
parent_itemid = "infobike://ince/incecp",
publishercode ="ince",
year = "2016",
volume = "253",
number = "5",
publication date ="2016-08-21T00:00:00",
pages = "3594-3602",
itemtype = "ARTICLE",
issn = "0736-2935",
url = "https://ince.publisher.ingentaconnect.com/content/ince/incecp/2016/00000253/00000005/art00085",
author = "Miccoli, Giuseppe and Pedrielli, Francesca and Parise, Giorgio",
abstract = "Harmonic response methods and vibroacoustic analysis are considered as tools of a methodology aimed at computation and prediction of the acoustic field emitted by a gear pump. In particular, FFT acceleration spectra were experimentally acquired only in few positions of a 8.5 cc/rev
external gear pump case in different operating conditions and considered as external excitation boundary conditions to a FE quite simplified vibroacoustic model. The emitted noise field was computed considering the pump as a 'black box', without taking into account the complex dynamics of
gear tooth meshing process and consequent fluid pressure/load distribution. The potentiality of this approach was confirmed and a good compromise was found between noise prediction accuracy and reduction of experimental and modelling requirements. Nevertheless the reduction of the FFT acceleration
spectra from 8 to 5 caused some method reliability problems and unsatisfactory results. This paper presents a further investigation aimed at improving the vibroacoustic analysis based on five FFT acceleration spectra as excitation boundary conditions. The choice of the measurement positions
was driven by a careful consideration of the spectra energy contribution.",
}