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Relevant bibliographies by topics / Blade root Joint

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Journal articles

Academic literature on the topic 'Blade root Joint'

Author: Grafiati

Published: 14 March 2023

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Journal articles on the topic "Blade root Joint"

1

Mishnaevsky, Leon. "Root Causes and Mechanisms of Failure of Wind Turbine Blades: Overview." Materials 15, no. 9 (2022): 2959. http://dx.doi.org/10.3390/ma15092959.

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A review of the root causes and mechanisms of damage and failure to wind turbine blades is presented in this paper. In particular, the mechanisms of leading edge erosion, adhesive joint degradation, trailing edge failure, buckling and blade collapse phenomena are considered. Methods of investigation of different damage mechanisms are reviewed, including full scale testing, post-mortem analysis, incident reports, computational simulations and sub-component testing. The most endangered regions of blades include the protruding parts (tip, leading edges), tapered and transitional areas and bond li

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2

Allara, Marco, Stefano Zucca, and Muzio M. Gola. "Effect of Crowning of Dovetail Joints on Turbine Blade Root Damping." Key Engineering Materials 347 (September 2007): 317–22. http://dx.doi.org/10.4028/www.scientific.net/kem.347.317.

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Stresses due to resonant vibrations induce fatigue damage in turbomachinery blades jeopardizing their structural integrity. Damping plays a fundamental role in passive control of resonant stresses. In the present work the effect of ‘crowning’ of dovetail joints on blade-root friction damping is for the first time investigated. In detail, the damping of a simplified blade is measured under varying centrifugal load for two different joint geometries: a customary dovetail attachment and a ‘crowned’ one. A theoretical model is developed to quantify the damping generated at the contact surfaces. Ex

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3

Ha, Kwangtae. "Reduction of Stress Concentration Factor (SCF) on the Bolted Joint Connection for a Large Wind Turbine Rotor Blade through Various Design Modifications." Applied Sciences 10, no. 18 (2020): 6588. http://dx.doi.org/10.3390/app10186588.

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The importance of a reliable blade root connection has grown due to the higher-gravity-induced edgewise loads on the blade root that resulted from the recent increased size and weight of a wind turbine rotor blade. To avoid the loosening of a bolt joint connection or even consecutive blade failures, the stress concentration factor (SCF) at the bolt thread root that is sensitive to fatigue should be understood comprehensively. In this work, two-dimensional and three-dimensional finite element (FE) analysis methods were used to determine the SCF at the bolt threads both between an insert and a M

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4

Yu Pechenina, Ekaterina, Vadim A. Pechenin, and Michael A. Bolotov. "Development of the compressor impeller configuration algorithm." Journal of Physics: Conference Series 2373, no. 6 (2022): 062021. http://dx.doi.org/10.1088/1742-6596/2373/6/062021.

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Abstract The article addresses the improvement of compressor impeller configuration methods. One of the key parameters of compressor blade assembly quality is the uniform tension in the blade shroud joint. The authors have developed an algorithm for arranging the blades in the compressor impeller, which allows reducing the tension and ensures its uniform distribution. The algorithm kernel is based on a mathematical model developed for calculating shroud tension areas on the suction side and pressure side based on controlled deviations of the airfoil and shroud. The computed areas are used to s

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5

Pechenina, Ekaterina, Mikhail Bolotov, and Vadim Pechenin. "DEVELOPMENT OF THE COMPRESSOR IMPELLER CONFIGURATION ALGORITHM." Perm National Research Polytechnic University Aerospace Engineering Bulletin, no. 69 (2022): 14–22. http://dx.doi.org/10.15593/2224-9982/2022.69.02.

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The article addresses the improvement of compressor impeller configuration methods. One of the key parameters of compressor blade assembly quality is the uniform tension in the blade shroud joint. The authors have developed an algorithm for arranging the blades in the compressor impeller, which allows reducing the tension and ensures its uniform distribution. The algorithm kernel is based on a mathematical model developed for calculating shroud tension areas on the suction side and pressure side based on controlled deviations of the airfoil and shroud. The computed areas are used to sort the b

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6

Zhang, Desheng, Dazhi Pan, Yan Xu, Peipei Shao, and Guotao Wang. "Numerical investigation of blade dynamic characteristics in an axial flow pump." Thermal Science 17, no. 5 (2013): 1511–14. http://dx.doi.org/10.2298/tsci1305511z.

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The unsteady numerical simulation of fluid field and structural transient dynamic analysis of axial flow pump were carried out at three operating conditions based on fluid-structure interaction method. Numerical results show that the maximum equivalent stress of impeller occurs at the joint region of the impeller blade root and the hub, and the maximum deformation of impeller occurs at the tips of blade leading edges. The frequency-domain of the maximum equivalent stress and outlet pressure fluctuation of impeller are mainly affected by the impeller blade passing frequency.

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7

Li, Chaofeng, Zengchuang Shen, Zilin Chen, and Houxin She. "A study on the vibration dissipation mechanism of the rotating blade with dovetail joint." Journal of Low Frequency Noise, Vibration and Active Control 40, no. 3 (2021): 1271–92. http://dx.doi.org/10.1177/1461348420985339.

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The vibration dissipation mechanism of the rotating blade with a dovetail joint is studied in this paper. Dry friction damping plays an indispensable role in the direction of vibration reduction. The vibration level is reduced by consuming the total energy of the turbine blade with the dry friction device on the blade-root in the paper. The mechanism of the vibration reduction is revealed by the variation of the friction force and the energy dissipation ratio of dry friction. In this paper, the flexible blade with a dovetail interface feature is discretized by using the spatial beam element ba

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8

Hosseini-Toudeshky, H., M. Jahanmardi, and M. S. Goodarzi. "Progressive debonding analysis of composite blade root joint of wind turbines under fatigue loading." Composite Structures 120 (February 2015): 417–27. http://dx.doi.org/10.1016/j.compstruct.2014.10.025.

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9

Liu, Haoming, Suxiang Yang, Wei Tian, Min Zhao, Xiaoling Yuan, and Bofeng Xu. "Vibration Reduction Strategy for Offshore Wind Turbines." Applied Sciences 10, no. 17 (2020): 6091. http://dx.doi.org/10.3390/app10176091.

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The operational environment of offshore wind turbines is much more complex than that of onshore wind turbines. Facing the persistent wind and wave forces, offshore wind turbines are prone to vibration problems, which are not conducive to their long-term operation. Under this background, first, how the wave affects the vibration characteristics of offshore wind turbines is analyzed. Based on the existing wave and wave load models, we analytically show that there exist fluctuating components related to the hydrodynamic frequency in the aerodynamic load and aerodynamic torque of offshore wind tur

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10

Salimi-Majd, Davood, Vahid Azimzadeh, and Bijan Mohammadi. "Loading Analysis of Composite Wind Turbine Blade for Fatigue Life Prediction of Adhesively Bonded Root Joint." Applied Composite Materials 22, no. 3 (2014): 269–87. http://dx.doi.org/10.1007/s10443-014-9405-4.

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