Finite Element Model Fractional Steps Updating Strategy for Spatial Lattice Structures Based on Generalized Regression Neural Network

Table 3

Results of updated frequency and (); is the th order frequency under the th updating.

Modal	(Hz)	(Hz)	(Hz)
1	6.78	6.70	6.65	1.25%	0.75%
2	8.19	7.99	7.96	2.54%	0.42%
3	11.48	10.89	10.82	5.35%	0.66%
4	14.85	13.41	13.34	10.69%	0.54%