Table 2 Geometrical parameters of the HRs composing the optimized FMAA.

From: Compact resonant systems for perfect and broadband sound absorption in wide waveguides in transmission problems

HR

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

\(h_n\)

5.00

10.00

\(h_c\)

40.00

28.17

40.00

40.00

\(w_{n}\)

3.17

3.87

5.34

3.01

5.67

2.90

3.10

3.41

7.41

8.97

9.33

8.21

12.80

11.22

9.85

13.99

\(w_{x,c}\)

9.83

8.80

16.75

6.42

7.37

7.37

6.70

9.37

26.70

\(w_{y,c}\)

17.60

  1. All dimensions are in mm. The values in italic correspond to the parameters values that are fixed before the optimization.
Back to article page