Dynamic modeling investigation of a composite blade

doi:10.19936/j.cnki.2096-8000.20230228.007

Abstract

Abstract: When a helicopter rotor works,the composite blade undergo large nonlinear extension, bending, twisting deflection,the traditionally moderate beam theory can’t satisfy the necessity of the composite blade dynamic analysis. In this paper, based on geometrically exact rotating beam theory, the composite blade dynamic model is presented with the mixed variational formulation. The deformation and natural frequency of the composite beam are solved numerically and compared with Minguet’s experimental data of composite large deflection beam, and the dynamic response of the rotating composite blade is also calculated to compare the result of Dymore software.The results show that the composite blade dynamic model can accurately predicte the dynamic behaviors of the composite blade with structure coupling. The effectiveness of the model is verified.

Key words: composite blade, geometrically accurate beam, mixed variational formulation, dynamic response

CLC Number:

TB332

SHAO Song, YING Xucheng. Dynamic modeling investigation of a composite blade[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(2): 54-59.

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