Vibration Analysis for Monitoring of Ancient Tie-Rods

Table 3

Results of computation with three sets of weights for the tie-rod PT4.

Sets of weight coefficients	Axial load [kN]	Bed stiffness [10^7 MN/m^2]	Natural frequencies [Hz]
			I	II	III	IV	V	VI
	39.00	3.50	16.03	32.91	51.37	72.03	95.32	121.53
	38.60	4.50	16.04	32.95	51.48	72.25	95.69	122.13
optimal values	38.70	3.75	16.00	32.85	51.31	71.97	95.28	121.55
, encastré BCs	32.20	∞	15.68	32.47	51.33	72.97	97.91	126.50
Experimentally defined frequencies			16.00	33.50	51.30	71.80	95.00	121.80