Results 21 to 30 of about 116,057 (264)

Variable Speed-Variable Pitch Controllers for Aero-Servo-Elastic Simulations of Wind Turbine Support Structures

Journal of Fluid Science and Technology, 2011
Site-specific fatigue evaluation of wind turbine support structures has been required by Japanese domestic rule since the revision of the Building Code in 2007.
Shigeo YOSHDA
doaj   +1 more source

A Composite Super-Twisting Sliding Mode Approach for Platform Motion Suppression and Power Regulation of Floating Offshore Wind Turbine

Journal of Marine Science and Engineering, 2023
The floating platform motion of an offshore wind turbine system can exacerbate output power fluctuations and increase fatigue loads. This paper proposes a new scheme based on a fast second-order sliding mode (SOSM) control and an adaptive super-twisting ...
Wenxiang Yang, Yaozhen Han, Ronglin Ma, Mingdong Hou, Guang Yang   +4 more
doaj   +1 more source

Simulation of stochastic loads for fatigue experiments [PDF]

Experimental Mechanics, 1989
A simple direct simulation method for stochastic fatigue-load generation is described in this paper. The simulation method is based on the assumption that only the peaks of the load process significantly affect the fatigue life. The method requires the conditional distribution functions of load ranges given the last peak values. Analytical estimates of
Sørensen, John Dalsgaard, Brincker, Rune   +1 more
openaire   +2 more sources

T2FL: An Efficient Model for Wind Turbine Fatigue Damage Prediction for the Two-Turbine Case

Energies, 2020
Wind farm load assessment is typically conducted using Computational Fluid Dynamics (CFD) or aeroelastic simulations, which need a lot of computer power. A number of applications, for example wind farm layout optimisation, turbine lifetime estimation and
Christos Galinos, Jonas Kazda, Wai Hou Lio, Gregor Giebel   +3 more
doaj   +1 more source

Dynamic synthetic inertial control method of wind turbines considering fatigue load

Frontiers in Energy Research, 2023
This paper proposes a dynamic synthetic inertia control method, considering the fatigue loads of the wind turbine. The control objectives include reducing the rate of change of frequency and frequency nadir of the power system and the fatigue load of the
Hanbo Wang, Yingming Liu, Xiaodong Wang, Guoxian Guo, Liming Wang   +4 more
doaj   +1 more source

Influence of Fatigue and Load Carriage on Mechanical Loading During Walking [PDF]

Military Medicine, 2012
Load carriage and muscular fatigue are two major stressors experienced by military recruits during basic training. The purpose of this study was to assess the influences of load carriage and muscular fatigue on ground reaction forces and ground reaction loading rates during walking.
Wang, He, Frame, James, Ozimek, Elicia, Leib, Daniel, Dugan, Eric L.   +4 more
openaire   +2 more sources

Study on Cl⁻ Erosion of Concrete under the Combined Effect of Fatigue Load and Wet–Dry Cycles: A Review

Applied Sciences, 2023
The service environment of concrete in the marine environment is harsh, and demands regarding the durability of marine concrete have increased. Marine concrete in harbor and wharf areas suffers from the combined effect of fatigue load, dry–wet cycles ...
Maohua Zhang, Zhiyi Li, Jiyin Cui, Ronghua Xu   +3 more
doaj   +1 more source

Interface Fatigue Test of Hybrid-Bonded Fiber-Reinforced Plastic-Reinforced Concrete Specimen

Buildings
This research produced five hybrid-bonded fiber-reinforced plastic (HB-FRP)-reinforced beam specimens, and different fatigue load amplitudes were used as parameter variables for the fatigue performance tests of the FRP–concrete interface.
Kun Zhou, Qian Wei, Jiabin Wang, Lei Gao, Chao Dong, Zejun Zhang, Kunhao Fu, Ziqin Cheng   +7 more
doaj   +1 more source

Feasibility and Safety of Somato‐Cognitive Coordination Therapy for Cerebellar Ataxia Following Pediatric Brain Tumor Treatment

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Cerebellar ataxia after pediatric brain tumor treatment can cause persistent gait, balance, and speech impairment, yet no established rehabilitation strategy exists. Somato‐cognitive coordination therapy (SCCT) is a virtual reality–guided intervention designed to promote sensorimotor integration through visually constrained reaching
Masanobu Takeuchi, Takashi Matsuzawa, Jun Yamanishi, Masahiro Yoshitomi, Junji Ikeda, Shin‐Ichi Tsujimoto, Yasuteru Yamaguchi, Norio Shiba, Dhroov Pathare, Ayumi Kato, Masahiko Hara   +10 more
wiley   +1 more source

The effects of fiber load and frictional work on fatigue behavior of water hydraulic artificial muscles in underwater environment

Results in Engineering
Water Hydraulic Artificial Muscles (WHAMs) exhibit characteristics of high pressure and substantial load capacity. In previous work, the fatigue life of WHAMs under elastic load has been investigated, and experimental results have indicated that the ...
Zengmeng Zhang, Yunrui Jia, Dewen Zhang, Junhao Guo, Yongjun Gong   +4 more
doaj   +1 more source