Abstract
This paper presents a finite element model for the static and dynamic stability study of a pretwisted aerofoil cross-section rotating blade subjected to an axial periodic force. The blade is modeled as an Euler–Bernoulli beam and Bolotin's method is used to show the effects of coupling due to the shear center distance from the centroid, pretwist angles, rotational speeds and stagger angles on the stability. The results show that pretwist angle and coupling are very important on static buckling loads and dynamic stability regions.
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