Table 2 Material properties and design parameter of DVA system.

From: Enhanced low-frequency wideband vibration mitigation of an acoustic black hole beam utilizing coupled distributed dynamic absorbers

Parameters of the damper

Density,

ρd (g.cm−3)

Young’s modulus,

Ed (MPa)

Loss factor,

ηd

  

2.69

300

0.8

  

Parameters of the spring

Density,

ρs (g.cm−3)

Outer diameter,

dk (mm)

Wire diameter,

d (mm)

Effective number,

n

Stiffness,

ks (N/mm)

7.93

5

0.8

6

8.13

Design parameters of the DVA

Mass,

ma (g)

Stiffness,

ka (N/mm)

Damping ratio,

ca (mm)

  

9.9

61.6

0.63

  
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