Table 6 Range analysis table and the optimized results.

From: Study on broadband vibration reduction characteristics and optimal design of the acoustic black hole plate with damping oscillators

Terms

Levels

Factor A

ABH diameter

Factor B

Damping connector elastic modulus

Factor C

Oscillator thickness

K

1

61.926

62.547

66.247

2

62.707

63.128

62.914

3

64.079

63.037

59.551

Kavg

1

20.642

20.849

22.082

2

20.902

21.043

20.971

3

21.360

21.012

19.850

Optimal level

50 mm

30 MPa

6 mm

R

0.718

0.194

2.232

The result at the optimal level

19.583

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