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

Table 11

Effect of lacing wire damage induced mistuning (for λ = 1) on natural frequencies (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	1.9978	1.9847	1.9668	1.9430	1.9125	1.8751
	III	2.1884	2.1646	2.1433	2.1254	2.1111	2.1002
2	I	4.6941	4.6941	4.6941	4.6941	4.6941	4.6941
	II	4.6993	4.6987	4.6979	4.6968	4.6956	4.6941
	III	4.7098	4.7083	4.7070	4.7060	4.7052	4.7045
3	I	7.8548	7.8548	7.8548	7.8548	7.8548	7.8548
	II	7.8573	7.8570	7.8566	7.8561	7.8555	7.8548
	III	7.8625	7.8617	7.8611	7.8606	7.8602	7.8599