Dissertation > Excellent graduate degree dissertation topics show

Dynamic Analysis of Horizontal Axis Wind Turbine Fatigue Characteristics

Author: YaoJiaGui
Tutor: ZhangXiaoDong
School: North China Electric Power University (Beijing)
Course: Fluid Machinery and Engineering
Keywords: blade dynamic response fatigue life damage rule formulation
CLC: TK83
Type: Master's thesis
Year: 2011
Downloads: 175
Quote: 2
Read: Download Dissertation

Abstract


Wind turbine blade is one of the key components to a large extent determine the wind turbine performance and life. With the wind turbine running time of the increase in the number of defects early in the design also will be exposed, a lot of fans due to vibration or fatigue damage.In this paper, the horizontal axis wind turbine blades as the main object of study, you want to find a wind turbine blade for structural dynamics analysis and fatigue life analysis methods for wind turbine blade design basis.Firstly, the basic theory of fatigue analysis and load calculation of wind turbine blades, made a brief analysis of the fatigue life estimation of the type and method, and the forces of wind machines to determine the wind turbine blade fatigue analysis method. Coupling system for wind turbine dynamic response calculation is based on momentum-blade element theory and the generalized coordinates Lagrange equation, using modal analysis established the wind wheel/cabin/tower coupled system equation of motion, and compiled using the Fortran language simulation program, respectively, the inherent characteristics of wind turbine blades and wind turbine coupling system to calculate the dynamic response analysis; for modal analysis, using the iterative method to replace the matrix method in the literature, and the two methods were compared and found that iterative method can achieve better numerical accuracy.For the calculation of wind turbine Tjareborg using GH Bladed software development analysis and calculation are the roots of the waving leaves, put them in array and torsion moments, and the forces under the root of the calculated equivalent stress of the roots, and finally under Miner linear cumulative damage criteria for the fatigue life of leaf analysis. In actual projects to estimate the life of the blade provides a good way.

Related Dissertations

  1. Numerical Study of the Effect with Straight and Bowed Stator in Different Axial Gaps,TH45
  2. Aerodynamic Performance Analysis of Low Pressure Turbine at Low Reynolds Numbers,V231.3
  3. Investigation on the Nutritional Composition of Walnut and Regularity of Its Nutrient Requirements,S664.1
  4. Axial fan blade vibration non-contact measurement,TD441.2
  5. Study on Fatigue Life Assessment and Dynamic Fracture of Ship Structure,U661.4
  6. Research and Development of Supercritical, Ultra Supercritical Steel Blade in Benxi Steel,TG335
  7. Analysis on Static-dynamic and Fatigue Characteristics of Metallurgical Overhead Traveling Crane,TH215
  8. Study on the Computer Aided Design of Die Forging Blade and Devices,V263.1
  9. Aerodynamic Performance Influence of Curved Blades to the Guided Blade Cascades,TK263.3
  10. Research on the Passivity-Based Control of Active Clamp Forward Converter with Integrated-magnetics,TM46
  11. Research on Numerical Simulation Technology on the Breaking Rock Process of Roadheader’s Cutting Head,TD421.5
  12. Fatigue Analysis and Life Prediction of a Loader’s Drive Axle Housing,TH243
  13. The Comparison of Guided Resistive Half-bridge in Two 2D Servo Valves,TH137.52
  14. The Fatigue Life Study of a Car Body Based on the Random Vibration,U463.82
  15. Fatigue Reliability Sensitivity Analysis of High Speed Rail Axle,U270.3
  16. Numerical Simulation on the External Flow Field of An Airfoil for Wind Turbine Blade,TM315
  17. Research and Development of UG-based Four-axis CNC Machining Module for Turbine Blade,TK263.3
  18. A Study on the Multi-objective Optimization of the Whole-ship Structure with Considerations for Dynamic Response Characteristics,U661.4
  19. Modeling and Machining Simulation for Free-form Surface Parts Based on Group Technology,TG659
  20. Dynamic Simulation and Experimental Research of Structure Drived by Laser Shock Wave,TN249
  21. Research of Rotor Dynamics Characteristics under the Action of Air Force,TH113

CLC: > Industrial Technology > Energy and Power Engineering > Wind energy, wind machine > Wind machinery and equipment
© 2012 www.DissertationTopic.Net  Mobile