Modal Analysis for a Rod-Fastened Rotor considering Contact Effect Based on Double Fractal Model

Table 6

Relative errors between the calculated and experimental results.

Nominal contact pressure, P0 (MPa)		1.492	2.487	5.013	10.106	12.475
Dimensionless load coefficient, ξ (C2)		0.377	0.226	0.112	0.055	0.045
Relative error (%)	1st order	1.31	0.87	−0.69	−1.00	−1.22
	2nd order	0.99	0.67	0.11	−0.15	−0.46
	3rd order	4.89	3.51	1.97	1.54	1.04
	4th order	1.01	0.87	0.15	0.52	0.68
	5th order	6.31	4.79	4.18	3.08	0.91