TY - JOUR

T1 - Finding the dominant energy transmission paths in statistical energy analysis

AU - Guasch, Oriol

AU - Aragons, Àngels

PY - 2011/5/9

Y1 - 2011/5/9

N2 - A key issue for noise, vibration and harshness purposes, when modelling the vibroacoustic behaviour of a system, is that of determining how energy is transmitted from a given source, where external energy is being input, to a target where energy is to be reduced. In many situations of practical interest, a high percentage of the transmitted energy is driven by a limited set of dominant paths. For instance, this is at the core of the existence of transmission loss regulations between dwellings. In this work, it is shown that in the case of a system modelled with statistical energy analysis (SEA), the problem of ranking dominant paths can be posed as a variation of the so-called K shortest path problem in graph theory. An algorithm for the latter is then modified and adapted to obtain the sorted set of K dominant energy transmission paths in a SEA model. A numerical example to show its potential for practical applications is included.

AB - A key issue for noise, vibration and harshness purposes, when modelling the vibroacoustic behaviour of a system, is that of determining how energy is transmitted from a given source, where external energy is being input, to a target where energy is to be reduced. In many situations of practical interest, a high percentage of the transmitted energy is driven by a limited set of dominant paths. For instance, this is at the core of the existence of transmission loss regulations between dwellings. In this work, it is shown that in the case of a system modelled with statistical energy analysis (SEA), the problem of ranking dominant paths can be posed as a variation of the so-called K shortest path problem in graph theory. An algorithm for the latter is then modified and adapted to obtain the sorted set of K dominant energy transmission paths in a SEA model. A numerical example to show its potential for practical applications is included.

UR - http://www.scopus.com/inward/record.url?scp=79952441006&partnerID=8YFLogxK

U2 - 10.1016/j.jsv.2010.11.021

DO - 10.1016/j.jsv.2010.11.021

M3 - Article

AN - SCOPUS:79952441006

SN - 0022-460X

VL - 330

SP - 2325

EP - 2338

JO - Journal of Sound and Vibration

JF - Journal of Sound and Vibration

IS - 10

ER -