Results 101 to 110 of about 6,289 (213)

Ultimate Limit State Fragility of Offshore Wind Turbines on Monopile Foundations [PDF]

, 2017
Assessing the risk posed by extreme natural events to the failure of offshore wind turbines (OWTs) is a challenging task. Highly stochastic environmental conditions represent the main source of variable loading; consequently, a high level of ...
Galasso, C, Wilkie, D
core  

Maximum power generation control of a hybrid wind turbine transmission system based on H∞ loop-shaping approach [PDF]

, 2019
The paper presents the design, modelling and optimal power generation control of a large hybrid wind turbine transmission system that seamless integrates planetary/parallel gear sets with a hydraulic transmission to improve the turbine’s reliability and ...
Karcanias, Aris, Tong, Xin, Yin, Xiuxing, Zhao, Xiaowei   +3 more
core   +1 more source

An Investigation into the Effect of Scour on the Loading and Deformation Responses of Monopile Foundations

Energies, 2017
Severe foundation scour may occur around monopile foundations of offshore wind turbines due to currents and waves. The so-called p-y curves method is suggested in the existing design recommendations to determine the behavior of monopiles unprotected ...
Wei-Chen Tseng, Yu-Shu Kuo, Jing-Wen Chen   +2 more
doaj   +1 more source

Comparative Study on Wave Elevations Downstream of Monopile- and Jacket-Mounted Offshore Wind Turbines

Journal of Marine Science and Engineering
Offshore wind turbines, especially the fixed-bottom type, have been commercialized and installed in recent years. Generally, an offshore sub-structure such as a monopile or a jacket foundation is adopted to secure offshore wind turbines.
Sharath Srinivasamurthy, Shigeo Yoshida, Shotaro Watanabe   +2 more
doaj   +1 more source

Numerical Analysis of Jacked and Impact-Driven Pile Installation Procedures in Offshore Wind Turbine Foundations

Geotechnics
The increasing global demand for renewable energy has resulted in a high interest in wind power, with offshore wind farms offering better performance than onshore installations.
Ka Lok Chan, Susana Lopez-Querol, Pedro Martin-Moreta   +2 more
doaj   +1 more source

Experimental and Numerical Analysis of PIP Slip Joint Subjected to Bending

Journal of Marine Science and Engineering
Detachable circular hollow sections (CHSs) offer an innovative solution to tackle the complexities of installation, maintenance, upgrades, and repairs in offshore monopile systems, particularly in challenging environments with limited access.
Md Ariful Islam, Hongbae Park, Daeyong Lee   +2 more
doaj   +1 more source

Centrifuge modelling of monopiles in dense sand at The Technical University of Denmark [PDF]

, 2012
The pile-soil interaction is of great importance in the design of monopiles supporting offshore wind turbines. Especially the predication of accumulation of rotations, change in stiffness and damping is difficult.
Hededal, Ole, Klinkvort, Rasmus Tofte, Leth, Caspar Thrane   +2 more
core  

Structural Load Optimization of 15 MW Offshore Wind Turbine Using LHS-Based Design Space

Journal of Marine Science and Engineering
The structural integrity of next-generation offshore wind turbines is highly sensitive to inflow variability, yet current standards often simplify wind conditions without capturing their combined effects on dynamic loads. To address this, we analyzed the
Sajid Ali, Muhammad Waleed, Daeyong Lee
doaj   +1 more source

A novel post-weld treatment using nanostructured metallic multilayer for superior fatigue strength. [PDF]

Sci Rep, 2023
Brunow J, Spalek N, Mohammadi F, Rutner M.   +3 more
europepmc   +1 more source

Comparison of S-N Curves from International Fatigue Design Standards for a Better Understanding of the Long-Term Operation of Offshore Wind Turbine Welded Foundations

Wind
Fatigue poses significant challenges for the structural integrity of monopiles, the most common type of foundation for offshore wind turbines. These structures are usually manufactured by rolling and welding together large steel plates.
Federico Della Santa, Gianluca Zorzi, Ali Mehmanparast   +2 more
doaj   +1 more source