INFLUÊNCIA DE CARGAS AXIAIS SOBRE AS FREQUÊNCIAS NATURAIS EM PÁS DE TURBINA EÓLICA

Authors

  • Fernanda Almeida Leite de Oliveira
  • Maura Angélica Milfont Shzu
  • Marcus Vinicius Girão

DOI:

https://doi.org/10.26512/ripe.v1i1.20722

Keywords:

Wind Turbine. Axial Load. Dynamic Analysis. Galerkin Method. Finite Element Method.

Abstract

This paper analysis the influence of axial loads on the values of natural frequencies of wind turbine blades. For this, the blade was reduced to a model of the cantilever-free beam. Analytical and numerical analyzes were conducted using the finite element method (FEM) in ANSYS®. The approximate analytical results were obtained using the Galerkin method and compared with the model Blevins (1984) and the numerical solution in ANSYS®. In order to calculate the frequency were considered the effects of the axial loads related to its own weight of the structure. The beam position changes the dynamic configuration of the element, its application follows a sinusoidal path as it passes through a pure compression condition for a pure traction, having its natural frequency, in this case, varying incrementally in this range. The results showed the expected behavior: higher values of natural frequencies for traction loads and lower values for compression loads in all cases.

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References

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Published

2015-09-14

How to Cite

Oliveira, F. A. L. de, Shzu, M. A. M., & Girão, M. V. (2015). INFLUÊNCIA DE CARGAS AXIAIS SOBRE AS FREQUÊNCIAS NATURAIS EM PÁS DE TURBINA EÓLICA. Revista Interdisciplinar De Pesquisa Em Engenharia, 1(1). https://doi.org/10.26512/ripe.v1i1.20722

Issue

Vol. 1 No. 1 (2015)

Section

Artigos

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