Table 5 Parameters of optimized resonant units.

From: A novel dynamic vibration absorber for vibration control of piping systems under multi-frequency harmonic excitations

Parameters

Basic mass (g)

Added mass (g)

Added mass thickness (mm)

LRU

\(m_{L1}\)

12.2

2.2

6 (7)

\(m_{L2}\)

12.2

2.4

6 (3)

MRU

\(m_{M1}\)

9.7

5.8

19 (8)

\(m_{M2}\)

9.7

1.6

5 (2)

SRU

\(m_{S1}\)

7.4

1.2

5 (2)

\(m_{S2}\)

7.4

0.3

1 (8)

  1. The number of the resonant units at a given added mass thickness is in [italics].