Lightweight Threshing Rack under Multisource Excitation Based on Modal Optimization Method

Table 5

Comparison of simulation and test modal frequency.

Modal order	Natural frequency (Hz)		Difference (Hz)	Percentage error (%)
	Simulation mode	Test mode
1	16.476	16.286	0.190	1.15
2	27.913	26.546	1.367	4.89
3	35.426	34.247	1.179	3.33
4	45.523	47.382	−1.859	4.08
5	56.366	53.218	3.148	5.58
6	58.634	56.542	2.092	3.57