Research Article

Free Vibration Analysis of Rotating Pretwisted Functionally Graded Sandwich Blades

Table 10

Nondimensional frequency parameters for the first six modes of the FG sandwich blade with varying scalar parameters of volume fraction (, , , and ).

Mode0.00.10.20.30.40.51.02.03.04.05.0

1st3.36063.57953.64933.86193.86653.97534.22484.47434.56594.69314.7617
2nd19.122620.084920.761921.435821.911122.390323.882525.416726.136226.597226.8850
3rd24.988226.096126.942627.692028.242528.761330.735733.063333.731334.204934.8816
4th55.859758.278160.334462.090863.561264.711468.956973.093775.192776.555077.6652
5th71.537273.701275.739377.301078.834380.043984.575589.279291.569993.166593.7638
6th75.542179.237681.670584.007685.890386.650393.429499.5237102.7955104.0268106.0757