Analytical and Numerical Investigation of Lacing Wire Damage Induced Mistuning in Turbine Blade Packet

Table 8

Effect of lacing wire damage induced mistuning (for λ = 0.1) on natural frequencies of the blade packet (lacing wire at 2/3rd of blade span).

Mode	Submode	values
		= 0	= 0.2	= 0.4	= 0.6	= 0.8	= 1.0
1	I	1.8751	1.8751	1.8751	1.8751	1.8751	1.8751
	II	1.8886	1.8870	1.8849	1.8823	1.8790	1.8751
	III	1.9146	1.9110	1.9078	1.9053	1.9032	1.9017
2	I	4.6941	4.6941	4.6941	4.6941	4.6941	4.6941
	II	4.6946	4.6946	4.6945	4.6944	4.6942	4.6941
	III	4.6957	4.6955	4.6954	4.6953	4.6952	4.6951
3	I	7.8548	7.8548	7.8548	7.8548	7.8548	7.8548
	II	7.8550	7.8550	7.8549	7.8549	7.8548	7.8548
	III	7.8555	7.8555	7.8554	7.8553	7.8553	7.8553