Results 21 to 30 of about 207,920 (308)

Calculation of Fatigue Life of Bow Frame of ARAON Considering Navigating in Ice and Open Waters

open access: yes한국해양공학회지, 2018
Ice-going ships such as icebreakers, icebreaking tankers, and icebreaking LNG carriers are subjected to wave loads in open water and ice loads in ice-covered water. In terms of the ship’s structural design, the local ice load is important.
Woo-Seong An, Tak-Kee Lee, Mi-Ran Hwang
doaj   +1 more source

Pseudochaotic behavior of deterministic automatic control systems of technical devices [PDF]

open access: yesE3S Web of Conferences, 2021
А method for generating a pseudo-random response in a linear dynamic system is considered. An example of the system transition to pseudochaotic behavior is given. The calculation of fatigue loads in the toggle plate by the given method is presented.
Nikitin Aleksandr   +3 more
doaj   +1 more source

A novel approach to structural load control using intelligent actuators [PDF]

open access: yes, 2009
The recent trend towards large multi-MW wind turbines resulted in the role of the control system becoming increasingly important. The extension of the role of the controller to alleviate structural loads has motivated the exploration of novel control ...
Dominguez, S.   +4 more
core   +1 more source

Fatigue Properties of Plain Concrete under Triaxial Tension-Compression-Compression Cyclic Loading

open access: yesShock and Vibration, 2017
Fatigue tests were performed on plain concrete under triaxial tension-compression-compression (T-C-C) cyclic loading with constant and variable amplitude using a large multiaxial machine.
Dongfu Zhao   +4 more
doaj   +1 more source

Evaluation of equivalent axle load factors for multi axles based on fatigue tests using actual strain waveforms

open access: yesInternational Journal of Transportation Science and Technology
Equivalent axle load factor (EALF) is used to characterize the fatigue damage effect of multi-axle loads on asphalt pavement. EALF is calculated as the ratio of the pavement’s fatigue resistance under a single axle load to that under a multi-axle load ...
Huailei Cheng   +4 more
doaj   +1 more source

Short-term fatigue analysis for tower base of a spar-type wind turbine under stochastic wind-wave loads

open access: yesInternational Journal of Naval Architecture and Ocean Engineering, 2018
Due to integrated stochastic wind and wave loads, the supporting platform of a Floating Offshore Wind Turbine (FOWT) has to bear six Degrees of Freedom (DOF) motion, which makes the random cyclic loads acting on the structural components, for instance ...
Haoran Li   +3 more
doaj   +1 more source

Fatigue Load Estimation through a Simple Stochastic Model

open access: yesEnergies, 2014
We propose a procedure to estimate the fatigue loads on wind turbines, based on a recent framework used for reconstructing data series of stochastic properties measured at wind turbines. Through a standard fatigue analysis, we show that it is possible to
Pedro G. Lind   +3 more
doaj   +1 more source

Application of Multi-Objective Control in Power and Load Optimization of Wind Turbines

open access: yesIEEE Access
During operation, wind turbine systems are affected by external wind speed disturbances and the dynamic coupling of the system, which can lead to significant resonance phenomena within certain frequency ranges. Resonance causes a dramatic increase in the
Jiawang Yuan   +3 more
doaj   +1 more source

Numerical analysis of fatigue behaviors for tungsten armor of ITER divertor

open access: yesNuclear Materials and Energy, 2020
Thermal responses and fatigue behaviors of the tungsten armor of monoblock divertor under steady-state and transient high heat flux (HHF) loads as well as the coupling of the two were simulated and analyzed by the finite element method. It was found that,
Shuming Wang   +3 more
doaj   +1 more source

Fatigue Performance of SFPSC under Hot-Wet Environments and Cyclic Bending Loads

open access: yesAdvances in Materials Science and Engineering, 2018
A new structural material named “steel fiber polymer structural concrete (SFPSC)” with features of both high strength and high toughness was developed by this research group and applied to the bridge superstructures in the hot-wet environments.
Shanshan Luo   +3 more
doaj   +1 more source

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