1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Hole distribution in phononic crystals: Design and optimization
Rent:
Rent this article for
USD
10.1121/1.3126948
/content/asa/journal/jasa/125/6/10.1121/1.3126948
http://aip.metastore.ingenta.com/content/asa/journal/jasa/125/6/10.1121/1.3126948
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Example of a multiobjective optimization problem with 2D decision and objective space.

Image of FIG. 2.
FIG. 2.

Master-slave architecture for parallel evMOGA.

Image of FIG. 3.
FIG. 3.

Starting conditions for the analysis. The inset shows an example of each of the different strategies used in the creation of vacancies in the starting PC.

Image of FIG. 4.
FIG. 4.

(a) Pareto fronts for the different symmetries of generation of vacancies used for attenuation effect; (b) attenuation area for each analyzed symmetry.

Image of FIG. 5.
FIG. 5.

Spectra of the resulting optimized samples: (a) Q1, (b) Q2, (c) Q3, and (d) Q4 shown in Fig. 4(a) (continuous line), and of the starting PC (dotted line). The range of frequencies optimized is delimited by two vertical dashed lines. The attenuation average level in the optimized range of frequencies for each of the symmetries used is represented (horizontal dotted line). Configurations of the optimized samples corresponding to each -vector are included as an inset.

Image of FIG. 6.
FIG. 6.

(a) Asymmetry parameter and (b) fraction of vacancies for each analyzed symmetry. The points represent the value of the parameter for each of the optimized structures obtained, and the line represents their average value.

Image of FIG. 7.
FIG. 7.

(a) Pareto fronts for the different vacancy generation symmetries used for focusing effect; (b) focusing area for each analyzed symmetry. The points represent the value of the parameter for each of the optimized structures obtained and the line represents their average value.

Image of FIG. 8.
FIG. 8.

Acoustic level in the acoustic focus zone. On the axis, the distance along the direction of the incident wave is shown, and frequencies for the four strategies analyzed on the axis are also shown. The color bar represents the acoustic level in decibels. The corresponding samples are also included.

Image of FIG. 9.
FIG. 9.

(a) Asymmetry parameter and (b) fraction of vacancies for the analyzed symmetries. The points represent the value of the parameter for each of the optimized structures obtained, and the line represents their average value.

Image of FIG. 10.
FIG. 10.

Experimental measurement setup. The starting PC consists of hollow aluminum rods long and in diameter arranged in a triangular pattern with constant lattice . There are 397 cylinders.

Image of FIG. 11.
FIG. 11.

Attenuation area versus number of cylinders for both analyzed cases.

Image of FIG. 12.
FIG. 12.

Variation of the asymmetry of the nine obtained structures as a function of the vacancies created. Vertical lines represent the optimum number of vacancies for both analyzed cases.

Image of FIG. 13.
FIG. 13.

Comparison of attenuation spectra corresponding to the starting PC, and the best sample obtained by means of the creation of vacancies: (a) ; (b) . The corresponding best structure obtained is shown in the inset.

Loading

Article metrics loading...

/content/asa/journal/jasa/125/6/10.1121/1.3126948
2009-06-01
2014-04-25
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Hole distribution in phononic crystals: Design and optimization
http://aip.metastore.ingenta.com/content/asa/journal/jasa/125/6/10.1121/1.3126948
10.1121/1.3126948
SEARCH_EXPAND_ITEM