Research Article
Free Vibration Analysis of Rotating Pretwisted Functionally Graded Sandwich Blades
Figure 13
Variations of the first six frequency parameters with the rotation velocity and stagger angles (, , , , , and ). (a) 1st mode, (b) 2nd mode, (c) 3rd mode, (d) 4th mode, (e) 5th mode, and (f) 6th mode.
(a) |
(b) |
(c) |
(d) |
(e) |
(f) |