Results 41 to 50 of about 361,673 (283)

Wave Attenuation Over Mangroves in the Nanliu Delta, China

Frontiers in Marine Science, 2022
Mangrove forests grow on tropical and subtropical coastlines and play a significant role in reducing hydrodynamic energy. However, little information is known about the mechanism of wave attenuation caused by mangroves of different ages, even though the ...
Xiaoyan Zhou, Zhijun Dai, Zhijun Dai, Wenhong Pang, Jie Wang, Chuqi Long   +5 more
doaj   +1 more source

dynoGP: Deep Gaussian Processes for Dynamic System Identification

International Journal of Adaptive Control and Signal Processing, EarlyView.
This work introduces a novel class of deep models for system identification, dynamical deep Gaussian processes, which combine the strengths of data‐driven methods, such as those based on neural network architectures, with the ability to output a probability distribution for uncertainty representation.
Alessio Benavoli, Marco Forgione, Dario Piga, Marco Zaffalon   +3 more
wiley   +1 more source

Overdamping of vibration resonances by liquid crystal elastomers

Scientific Reports
This work aims to compare the capability of vibration attenuation by standard elastomeric polymers, and by the new anomalously damping nematic liquid crystal elastomer.
Waiel Elmadih, Andrew Terentjev, Hsin-Ling Liang, Eugene Terentjev   +3 more
doaj   +1 more source

A Parallel Polyurea Method for Enhancing Damping Characteristics of Metal Lattice Structures in Vibration Isolation and Shock Resistance

Applied Sciences
The inherent damping deficiency in metal lattice structures leads to inadequate attenuation of both resonant peaks and shock-induced vibrations, significantly limiting their effectiveness in vibration isolation and shock resistance applications.
Zhongyi Cheng, Xinbin Zhang, Yizhong Zhuang, Yamin Zhao, Junning Cui   +4 more
doaj   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Dislocation Damping and Anisotropic Seismic Wave Attenuation in Earth's Upper Mantle

Science, 2012
Upper Mantle Dislocations The driving forces behind plate tectonics act on a relatively weak upper mantle, such that the stress accumulated from colliding plates in the crust dissipates with depth. The physical properties of common mantle minerals, such as olivine, may be important in controlling mantle rheology, but they are ...
Farla, Robert, Jackson, Ian, Fitz Gerald, John, Faul, Ulrich H, Zimmerman, M   +4 more
openaire   +3 more sources

Robust Admittance Shaping Approach to Grid Current Harmonic Attenuation and Resonance Damping [PDF]

IEEE Transactions on Industry Applications, 2018
This paper presents a novel grid current control of a grid-connected voltage source converter with an LCL filter. The proposed control method uses an H 8 synthesis method to shape the input admittance of the converter, to track a given current reference, and/or to limit the controller actuation at different frequency ranges. The converter admittance is
Santiago Cobreces, Xiongfei Wang, Jorge Perez, Robert Grino, Frede Blaabjerg   +4 more
openaire   +2 more sources

Discrepancies Between Micro Versus Macroscale Viscoelastic Properties in a Microplastic‐Tissue Composite Model

Advanced Engineering Materials, EarlyView.
This study explores the discrepancies between bulk mechanics and spatial mapping in a tissue‐mimetic hydrogel model. Microplastic particles create localized stiff mechanical microenvironments that are detectable by cellular‐scale nanoindentation but leave bulk properties unchanged as measured by rheology.
Ahron T. Verschleisser, Baptiste Le Roi, Omri Leshem, Joshua M. Grolman   +3 more
wiley   +1 more source

The energy consumption characteristics of a new type of energy dissipating vibration-damping fastener

AIP Advances
To address the issue of inadequate energy dissipation capacity in current vibration-damping fasteners, this study examined the impact of stiffness and damping factor of vibration-damping fasteners on the vibration attenuation rate of rails, based on the ...
Yan Liu, Jiansen Zhu, Xianpu Yuan, Runhua Fan, Yuan Yuan   +4 more
doaj   +1 more source

Memory-Kernel Damping in Wave Propagation from a Variational Reservoir Model: Dispersion, Stability, and Fractional Regimes

Fractal and Fractional
Hereditary damping and fractional attenuation are widely used to model wave propagation in complex media, but the variational and spectral origin of the corresponding nonlocal-in-time operators is often left implicit.
Derik W. Gryczak, Gabriel G. da Rocha, Aloisi Somer, Luiz R. Evangelista, Ervin K. Lenzi   +4 more
doaj   +1 more source