An Improved Rigid Multibody Model for the Dynamic Analysis of the Planetary Gearbox in a Wind Turbine

Table 6

Comparison between the natural frequencies calculated by the two models.

Rotational natural frequencies				Translational natural frequencies
	In gearbox [Hz]	Independent [Hz]	Error [%]		In gearbox [Hz]	Independent [Hz]	Error [%]
1	0	0	0	1	743.2	743.2	0
2	1696.5	1334.0	27.2	2	1102.7	1102.7	0
3	2014.9	1891.3	6.54	3	1896.5	1896.5	0
4	2663.1	2662.8		4	2276.5	2276.5	0
5	8064.8	8045.4		5	6989.0	6989.0	0
6	11952.2	11822.3	1.1	6	9651.7	9651.7	0