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

Table 7

Natural frequencies ( values) of the tuned blade packet with varying stiffness ratios (lacing wire at 2/3rd of blade span).

Mode	Submode	= 0.1	= 0.25	= 0.5	= 1.0
1	I	1.8751	1.8751	1.8751	1.8751
	II	1.8886	1.9082	1.9396	1.9978
	III	1.9146	1.9694	2.0511	2.1884
2	I	4.6941	4.6941	4.6941	4.6941
	II	4.6946	4.6954	4.6967	4.6993
	III	4.6957	4.6980	4.7019	4.7065
3	I	7.8548	7.8548	7.8548	7.8548
	II	7.8550	7.8554	7.8560	7.8573
	III	7.8555	7.8567	7.8586	7.8625