Results 11 to 20 of about 4,740 (306)

A Semi‐active piezoelectric friction damper

open access: yesEarthquake Engineering & Structural Dynamics, 2014
SummaryThis research investigates the development of a semi‐active piezoelectric friction damper for controlling the seismic response of large‐scale structures. The proposed device is made of Duplex steel and leads to high friction capacity, which can be developed either in passive or semi‐active modes.
Pardo Varela Javier Ignacio   +1 more
openaire   +5 more sources

Semi-active linear vacuum packed particles damper

open access: yesJournal of Theoretical and Applied Mechanics, 2016
In this paper, the authors focus on the proposition of an innovative semi-active linear damper prototype working on the basis of granularmaterials. Vacuum Packed Particles (VPP) belong to the class of materials whose mechanical (rheological, dissipative) propertiesmay be quickly changed by applying a partial vacuum inside the system. The concept of an
Zalewski, Robert, Chodkiewicz, Paweł
openaire   +4 more sources

Semi-active control of a nonlinear quarter-car model of hyperloop capsule vehicle with Skyhook and Mixed Skyhook-Acceleration Driven Damper controller

open access: yesAdvances in Mechanical Engineering, 2021
A suspension system is one of the integral parts of a hyperloop capsule train, which is used to isolate the car-body from bogie vibration to provide a safer and comfortable service.
Birhan Abebaw Negash   +4 more
doaj   +1 more source

Nonlinear controller supported by artificial intelligence of the rheological damper system reducing vibrations of a marine engine

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2023
In this paper, a semi-active nonlinear artificial intelligence compound controller for marine engines was developed to improve vibration reduction characteristics across a wide frequency range.
Mingyin Yang   +2 more
doaj   +1 more source

Optimized Fuzzy Skyhook Control for Semi-Active Vehicle Suspension with New Inverse Model of Magnetorheological Fluid Damper

open access: yesEnergies, 2021
To improve the performance of vehicle suspension, this paper proposes a semi-active vehicle suspension with a magnetorheological fluid (MRF) damper. We designed an optimized fuzzy skyhook controller with grey wolf optimizer (GWO) algorithm base on a new ...
Teng Ma   +6 more
doaj   +1 more source

Enhancing Friction Pendulum Isolation Systems Using Passive and Semi-Active Dampers

open access: yesApplied Sciences, 2020
Friction pendulum systems (FPSs) are a common solution for isolating civil engineering structures under ground movements. The result is a base-isolated structure in which the base exhibits low shear stiffness in such a way that the input energy of the ...
Christian A. Barrera-Vargas   +3 more
doaj   +1 more source

Experimental Evaluation of Modified Groundhook Car Suspension with Fast Magnetorheological Damper

open access: yesActuators, 2022
The car suspension setting is always a trade-off between comfort and handling. The semi-active damper system seems to be an option for reducing the compromise between the two demands.
Jiří Žáček   +5 more
doaj   +1 more source

Optimal control system design considering damping characteristics of semi-active damper

open access: yesNihon Kikai Gakkai ronbunshu, 2015
To reduce the absolute acceleration and displacement of buildings during earthquakes, this paper proposes an optimal control system design method considering structural limitation of a semi-active damper.
Tatsuki ISHIZAKI, Masaki TAKAHASHI
doaj   +1 more source

Skyhook surface sliding mode control on semi-active vehicle suspension systems for ride comfort enhancement [PDF]

open access: yes, 2009
A skyhook surface sliding mode control method was proposed and applied to the control on the semi-active vehicle suspension system for its ride comfort enhancement.
Yi Chen, Chen, Y.
core   +1 more source

Passive, semi-active, active and hybrid mass dampers: A literature review with associated applications on building-like structures

open access: yesDevelopments in the Built Environment, 2022
In this paper, a state-of-the-art literature review is presented emphasising on the development of control variants for mass damper schemes on building-like structures.
Lefteris Koutsoloukas   +2 more
doaj   +1 more source

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