STATIC ANALYSIS OF A COMPOSITE WIND TURBINE BLADE USING FINITE ELEMENT MODEL

2017-05-17
Ozyildiz, Meltem
Çöker, Demirkan
This study is presented here that the stress characteristics of an existing 5-meter composite wind turbine blade for 30 kW wind turbine designed for METUWIND is known by using finite element method. Modal and static analysis is performed in order to obtain static and dynamic behavior of the blade. To perform analysis, the geometric three-dimensional model of the blade is obtained by using two-dimensional drawings of the blade. After geometric modeling of the blade, the materials that are used in blade structure are applied to Ansys ACP. Then, the blade structure model is adapted a finite element solver, Ansys Workbench. Finally, loading conditions are applied along the blade and the results are obtained. The results of this study indicate that the internal flange is the main force-supporting part, while other parts of the blade are mainly keeping the blade stable.

Suggestions

Finite element modelling of a composite wind turbine blade with fully-bonded and partically unbonded trailing edge
Özyıldız, Meltem; Çöker, Demirkan; Department of Aerospace Engineering (2018)
In this thesis, strength analysis of an existing 5-meter glass-fiber epoxy composite wind turbine blade subjected to monotonic loading condition is presented. Finite element analysis is employed to simulate the virtual testing of the blade and understand the failure modes/mechanisms which may lead to the ultimate failure of the blade. CAD Model of the blade is prepared using NX 10.0 and ANSYS ACP/Pre module is utilized for building the material model of the blade. The evaluation of the stresses is carried o...
Design and analysis of test rig for small scale wind turbine blade
İçen, Mustafa.; Çöker, Demirkan; Department of Aerospace Engineering (2019)
In this thesis, a test setup for the experimental 5 meter RÜZGEM wind turbine blade and that can be used for small scale wind turbine blades up to 9 meter is designed and analyzed. The purpose of this thesis is to help establishing the test infrastructure under METUWIND project such as NREL, RISØ, CRES. The literature on the existing facilities is reviewed. After that, RÜZGEM wind turbine blade is introduced and design loads are presented. To apply these loads appropriately to the blade, the moment distribu...
Comparative study of transient and quasi-steady aeroelastic analysis of composite wind turbine blade in steady wind conditions
Sargın, Hakan; Kayran, Altan; Department of Aerospace Engineering (2014)
The objective of this study is to conduct a comparative study of the transient and quasi-steady aeroelastic analysis of a composite wind turbine blade in steady wind conditions. Transient analysis of the wind turbine blade is performed by the multi-body dynamic code Samcef Wind Turbine which uses blade element momentum theory for aerodynamic load calculation. For this purpose, a multi-body wind turbine model is generated with rigid components except for the turbine blades. For the purposes of the study, a r...
Determination of the bending twisting coupling potential of composite materials via digital image correlation and its implementation in wind turbine blades
Şener, Özgün; Kayran, Altan; Department of Aerospace Engineering (2017)
In this thesis study, the main objective is to investigate the effect of bending-twisting coupling in composite wind turbine blades on the load alleviation, power generation and structural performance of the wind turbine system. For this purpose, experimental and numerical study is initially conducted to determine the bend-twist coupling potentials of composite materials. Bending-twisting behavior of composite materials are determined through a comparative study via the Digital Image Correlation (DIC) syste...
Dynamic modeling, control and adaptive envelope protection system for horizontal axiswind turbines
Şahin, Mustafa; Yavrucuk, İlkay; Department of Aerospace Engineering (2018)
In this thesis study, a wind turbine envelope protection system is introduced to protect turbines throughout the below and above rated regions. The proposed protection system, which is based on a neural network, adapts to various turbines and operational conditions. It can keep the turbine within pre-defined envelope limits whenever a safe operation is about to be violated. The avoidance is realized by control limiting technique applied to the blade pitch controller output, thereby adjusting the blade pitch...
Citation Formats
M. Ozyildiz and D. Çöker, “STATIC ANALYSIS OF A COMPOSITE WIND TURBINE BLADE USING FINITE ELEMENT MODEL,” 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/55675.