Dynamic instability and internal resonance of rotating pretwisted composite airfoil blades

Yan Niu, Meiqi Wu, Minghui Yao and Qiliang Wu

Chaos, Solitons & Fractals, 2022, vol. 165, issue P2

Abstract: A rotating pretwisted airfoil blade model reinforced with graphene platelets combined with first-order shear deformation theory is developed to study dynamic instability and internal resonance of the rotating blade, which subjected to the transverse load and in-plane load. Based on the mode shapes derived by using Rayleigh-Ritz method, Lagrange's formulation is taken into account to acquire nonlinear ordinary differential equations. The critical buckling loads and instability regions are obtained and then compared with the opening results. Then, the method of multiple scales is taken into account to solve the modulation equations of the rotating airfoil blade in the presence of 1:2 internal resonance. The detailed discussions related to frequency-response and force-response curves under different parameters are carried out.

Keywords: Rotating airfoil blade; Graphene platelets; Pre-twisted cantilever panel; Dynamic instability; Internal resonance (search for similar items in EconPapers)
Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:eee:chsofr:v:165:y:2022:i:p2:s0960077922010141

DOI: 10.1016/j.chaos.2022.112835

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