Maintaining Specific Natural Frequency of Damped System despite Mass Modification

Table 1

Natural frequencies of the original system and the modified system.

Mode order ()	1	2	3	4	5	6
	0.109	0.145	0.205	0.261	0.314	0.337
	0.106	0.133	0.199	0.254	0.310	0.330
Error (%)	2.75	8.28	2.93	2.68	1.27	2.08