Vibration Response of the Crawler Combine Chassis Frame Excited by the Engine

Table 4

Vibration frequency and amplitude of each measuring point under engine idling conditions (small accelerator).

Measuring point	Peak serial number	direction (front and back)		direction (lateral)		direction (vertical)
		Frequency (Hz)	Amplitude (m·s^-2)	Frequency (Hz)	Amplitude (m·s^-2)	Frequency (Hz)	Amplitude (m·s^-2)
Engine mount	1	49.38	0.71	49.38	0.55	49.38	2.28
	2	25	0.68	25	0.37	25	0.40
	3	74.38	0.35	51.88	0.18	74.38	0.27
Seat support	1	49.38	0.911	49.38	1.021	49.38	2.855
	2	25	0.717	25	0.222	25	0.682
	3	125	0.633	49.81	0.197	98.76	0.485
Front left chassis	1	48.75	1.35	24.38	0.42	24.38	1.50
	2	24.38	1.00	51.25	0.33	51.25	0.76
	3	27.5	0.95	26.88	0.24	27.5	0.52