Effects of Stem Cutting in Rice Harvesting by Combine Harvester Front Header Vibration

Table 1

Mode vibration frequency and shape of front header.

Mode frequency order	Natural frequency (Hz)	Maximum amplitude (mm)	Mode vibration shape
1	5.28	10.09	Left and right vibration of the divider
2	5.64	11.64	Left and right vibration of the divider
3	20.28	15.42	Radial vertical vibration of pentagonal reel
4	29.77	16.54	Radial vertical vibration of pentagonal reel
5	32.36	19.39	Left and right vibration of the divider
6	33.85	27.54	Left and right vibration of the divider
7	44.21	18.84	Left and right vibration of pentagonal reel and divider
8	46.42	24.41	Left and right vibration of pentagonal reel and divider