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

Table 13

Natural frequencies for configuration 1 vs. configuration 5.

Mode	Initial model frequency (Hz)	Target model frequency (Hz)	% relative error
1	3.81	3.60	5.95
2	4.93	4.73	4.31
3	5.43	5.35	1.52
4	5.51	5.96	7.52
5	6.71	6.49	3.45
6	7.73	8.06	4.05
7	8.48	8.62	1.65
8	8.86	9.18	3.44
9	9.12	9.28	1.76
10	9.46	9.50	0.43
11	9.97	10.13	1.51
12	10.29	10.48	1.85
13	10.87	10.87	0.00
14	11.13	10.97	1.39