Results 61 to 70 of about 17,556 (308)

Frequency-Based Control Strategy for Compact Electromagnetic Tuned Mass Damper

open access: yesShock and Vibration, 2021
The control of harmonic machine-induced vibration has been a common task in the engineering scope. The passive tuned mass dampers represent the most reliable and practical approach to reduce such excessive vibration.
Semen Kopylov   +2 more
doaj   +1 more source

Optimization of a pseudoelastic absorber for vibration mitigation [PDF]

open access: yes, 2017
Damic vibration absorbers (DVAs) have received special attention in recent years due to their capability to reduce structural vibrations of a primary structure.
Bernardini, Davide   +2 more
core   +1 more source

2D Magnetic and Topological Quantum Materials and Devices for Ultralow Power Spintronics

open access: yesAdvanced Functional Materials, EarlyView.
2D magnets and topological quantum materials enable ultralow‐power spintronics by combining robust magnetic order with symmetry‐protected, Berry‐curvature‐driven transport. Fundamentals of 2D anisotropy and spin‐orbit‐coupling induced band inversion are linked to scalable growth and vdW stacking.
Brahmdutta Dixit   +5 more
wiley   +1 more source

Fractional-order feedback control of a poorly damped system [PDF]

open access: yes, 2014
This study presents the design of a fractional-order proportional-integral (FOPI) controller for a mass-spring-damper system which is poorly damped. A model based design technique is used to design a FOPI controller for this system. A good performance of
Chevalier, Amélie   +4 more
core   +2 more sources

Advanced Seismic Retrofitting with High-Mass-Ratio Tuned Mass Dampers

open access: yesSoil Dynamics and Earthquake Engineering, 2023
Tuned Mass Dampers (TMDs) are traditionally employed in tall buildings to control displacements, typically featuring a low mass ratio. This study explores the potential of TMDs with significantly higher mass ratios for seismic retrofitting in existing civil structures, an area that remains largely unexplored.
Marrazzo P. R.   +3 more
openaire   +1 more source

Prenucleation Species Dictate Foreign Ion Incorporation in the Biomineral Precursor Amorphous Calcium Carbonate

open access: yesAdvanced Functional Materials, EarlyView.
ACC forms via aggregating prenucleation clusters that gatekeep its chemical composition. Ion identity steers the path: Ba and Sr substitute Ca in clusters, thereby inhibiting nucleation, with a dose‐dependent switch of Sr to induction. Mg partitions into Mg‐rich and Mg‐poor clusters; the latter form ACC, expelling Mg.
Qianyu Zhao   +9 more
wiley   +1 more source

The Cuttlebone Blueprint for Multifunctional Metamaterials: Design Taxonomy, Functional Decoupling, and Future Horizons

open access: yesAdvanced Functional Materials, EarlyView.
Cuttlebone‐inspired metamaterials exploit a septum‐wall architecture to achieve excellent mechanical and functional properties. This review classifies existing designs into direct biomimetic, honeycomb‐type, and strut‐type architectures, summarizes governing design principles, and presents a decoupled design framework for interpreting multiphysical ...
Xinwei Li, Zhendong Li
wiley   +1 more source

MECHANICAL DAMPING SYSTEM FOR STRUCTURES [PDF]

open access: yes, 2005
A mechanical damping system for a structure is provided. The mechanical damping system comprises a tubular impact frame secured to the structure. A support frame is secured to the structure with the support frame spaced from the impact frame.
Hamilton, Homer R., III   +2 more
core   +1 more source

Tailoring K+/Vacancy Disordered Layered Oxide via Charge Engineering for Stabilizing High‐Performance Potassium‐Ion Batteries

open access: yesAdvanced Functional Materials, EarlyView.
With a charge‐ion coupling engineering strategy, a K+/vacancy disordered K0.5Mn0.8Co0.1Ti0.1O2 material has been designed. The targeted transition metal doping disrupts charge ordering and inducing K+/vacancy disordering, thereby enabling rapid K+ diffusion through interconnected channels and a stable solid‐solution reaction mechanism.
Yongfeng Jia   +10 more
wiley   +1 more source

Experimental Study on Noise Suppression Effect of Wheel’s Tuned Mass Damper to Metro Vehicle

open access: yes机车电传动, 2014
In order to study the noise reduction effect of wheel’s tuned mass damper, the train’s pass by and interior noise were measured with and without wheel’s tuned mass damper respectively according to the standard ISO3095-2005, ISO3381-2005, GB/T 5111-2011 ...
GUO Tao
doaj  

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