Table 1 Effects of the distance between the double defects on the defect band splitting along with its comparison with the single defect case
From: Double defects-induced elastic wave coupling and energy localization in a phononic crystal
Number of defects | Defect location | Numerical simulations | Experiments | ||||
|---|---|---|---|---|---|---|---|
Defect band frequency [kHz] | Differences [Hz] | Defect band frequency [kHz] | Differences [Hz] | ||||
Single | 4th | 59.65 | – | 58.11 | – | ||
Double | (4, 7) | 59.51 | 59.85 | 340 | 57.43 | 57.78 | 350 |
(4, 8) | 59.60 | 59.70 | 100 | 57.02 | 57.12 | 100 | |
(4, 9) | 59.63 | 59.66 | 30 | 57.26 | 57.30 | 40 | |