Naslov
Optimization of noise barrier efficiency using genetic algorithms

Autori
Jambrošić, Kristian ; Grubeša, Sanja ; Domitrović, Hrvoje

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings Internoise 2013 / Talasch, Werner - Beč : Österreichischer Arbeitsring für Lärmbekämpfung, 2013, 1-9

Skup
Internoise 2013

Mjesto i datum
Innsbruck, Austrija, 15.09.2013. - 18.09.2013

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Noise barriers; Insertion loss; Genetic algorithms

Sažetak
Although noise barriers are the most common technical solution for decreasing the excess noise levels at a receiver point, there is a constant need for increasing their efficiency. Insertion loss, the acoustic efficiency parameter, largely depends on the barrier’s geometry, mostly its height. Nevertheless, the barrier’s top and its overall shape can have a substantial influence on the insertion loss as well. This paper presents the use of genetic algorithms in the design phase of noise barriers by using BEM as the numerical tool for calculating its insertion loss. The optimization was not carried out only by taking into account its acoustical performance, but also having in mind the economic feasibility of using different materials and shapes of the barrier modules. An economic feasibility coefficient is defined and used as a final numerical value for comparing the overall efficiency of barrier design. The barrier performance was evaluated for a point sound source in both 2D and 3D simulation space, and its total rating based on the economic feasibility coefficient and its acoustical performance were compared to a reference plain barrier of same height. Scale model measurements were performed as well and compared to the simulation results.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA