Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Stress Analysis of the Blade Joint for a Small Wind Turbine

소형풍력터빈 블레이드 체결부의 응력해석

  • Received : 2011.08.16
  • Accepted : 2011.10.12
  • Published : 2012.01.01
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Abstract

In this paper, an analysis of the joint that transmits power from the blades to the generator is performed using the FEM (finite element method). The mode shapes and natural frequencies were extracted using experimental modal analysis in order to establish the FEM model. Then, the model was verified by comparing the mode shapes and natural frequencies to those obtained from the ANSYS modal analysis. Dynamic stress analysis was performed at the rated and limited wind speeds considering the wind load and gravity.

본 논문에서는 유한요소법을 이용하여 블레이드에서 발생하는 동력을 발전기로 전달하는 체결부에 대한 연구를 수행하였다. 블레이드 체결부의 유한요소 모델을 수립하기 위하여 실험적 모드해석을 이용하여 각 부품의 고유진동수 및 고유모드를 추출하였으며, 사용프로그램인 ANSYS를 이용한 모드해석을 통하여 추출된 유한요소 모델의 고유진동수와 고유모드 비교를 통하여 모델을 검증하였다. 검증된 유한요소 모델을 이용하여 정격풍속 상태와 한계풍속 상태에서 응력해석을 수행하였으며, 해석 시 작동상태의 경계조건과 중력 및 바람에 의한 하중이 고려되었다.

Keywords

References

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  1. Performance Prediction of Wind Power Turbine by CFD Analysis vol.37, pp.4, 2013, https://doi.org/10.3795/KSME-B.2013.37.4.423