Minimization of Ground Vibration Test Configurations for F-16 Aircraft by Subtractive Modification

Table 9

Natural frequencies for configuration 1 vs. configuration 3.

Mode	Initial model frequency (Hz)	Target model frequency (Hz)	% relative error
1	3.84	4.28	10.24
2	5.01	5.44	7.87
3	5.48	6.23	11.95
4	5.71	6.45	11.53
5	6.86	7.98	14.05
6	7.89	8.94	11.75
7	8.90	9.50	6.22
8	9.08	9.65	5.91
9	9.74	10.57	7.81
10	10.12	10.68	5.25
11	10.61	11.17	5.02
12	11.20	11.82	5.26
13	11.31	11.91	5.05
14	11.93	12.34	3.30
15	12.03	13.08	8.02
16	12.67	13.14	3.57
17	12.95	13.42	3.49