The Effect of Perforation on the Dynamics of a Flexible Panel

Table 2

Parameters of the perforated panel with different hole diameter and number of holes and fixed perforation ratios.

Name	Number of holes	Diameter; (mm)	Perforation ratio (%)
P20-20-10	20	20	10
P40-14-10	40	14	10
P80-10-10	80	10	10
P20-28-21	20	28	21
P30-23-21	30	23	21
P40-20-21	40	20	21
P20-34-30	20	20	30
P30-28-30	30	34	30
P58-20-30	58	28	30