Results 41 to 50 of about 22,380 (260)

On the Damping Force and added Mass of Ships Heaving and Pitching

Journal of Zosen Kiokai, 1959
When cylinders of Lewis Form sections heave and pitch on the free surface, their damping force and the added mass were exactly calculated by Ursell's Method. And many figures in this report show the results of the calculation. Then the reporter calculated, applying the results of the above-mentioned calculation and by Strip Method, the damping force ...
openaire   +2 more sources

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

A Novel DFIG Damping Control for Power System with High Wind Power Penetration

Energies, 2016
Aiming at the fact that large-scale penetration of wind power will to some extent weaken the small signal stability of power systems, in this paper, the dynamic model of a doubly fed induction generator (DFIG) is established firstly, to analyze the ...
Aiguo Tan, Xiangning Lin, Jinwen Sun, Ran Lyu, Zhengtian Li, Long Peng, Muhammad Shoaib Khalid   +6 more
doaj   +1 more source

New AI‐Assisted Approach for Expanding the Solution Space: Application to Lattice Structure Design

Advanced Engineering Materials, EarlyView.
This work introduces an innovative framework for designing structured materials by ex panding the design space through reparameterization of qualitative variables into continuous structural descriptors. Combined with machine‐learning‐based prediction and multi‐objective optimization, the approach enables the discovery of novel lattice architectures ...
G. H. Gahimbare, Y. Beideler, D. Chune, R. De Guio, T. Roland, H. Chibane   +5 more
wiley   +1 more source

The effect of heave-face plates on FOWT heave motion: Fluid dynamic analysis [PDF]

BIO Web of Conferences
Renewable energy technology is a topic that has often been raised in many studies lately. To support the 2020-2024 PRN (National Research Priority) program in the Maritime sector, the Researcher has developed FOWT (Floating Offshore Wind Turbine), a ...
Ghofur Abdul, Sulisetyono Aries, Harso Nugroho Wibowo, Ali Baharuddin, Armansyah Moh. Muria   +4 more
doaj   +1 more source

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

Advanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

Dynamic Optimization of Constrained Layer Damping Structure for the Headstock of Machine Tools with Modal Strain Energy Method

Shock and Vibration, 2017
Dynamic stiffness and damping of the headstock, which is a critical component of precision horizontal machining center, are two main factors that influence machining accuracy and surface finish quality. Constrained Layer Damping (CLD) structure is proved
Yakai Xu, Weiguo Gao, Yuhan Yu, Dawei Zhang, Xiangsong Zhao, Yanling Tian, Huaying Cun   +6 more
doaj   +1 more source

Study of the effect of composite constrained layers in vibration damping of plates

International Journal of Applied Mechanics and Engineering, 2014
To add damping to the system, viscoelastic materials (VEM) are added to structures, in order to enhance damping effects of the VEM, a constraining layer is attached. Due to the addition of the material on the system the fundamental characteristics of the
K.S.K. Sasikumar, S. Selvakumar, K.P. Arulshri   +2 more
doaj   +1 more source

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

Seismic Design of Steel Moment-Resisting Frames with Damping Systems in Accordance with KBC 2016

Applied Sciences, 2019
An efficient design procedure for building structures with damping systems is proposed using nonlinear response history analysis permitted in the revised Korean building code, KBC 2016.
Seong-Ha JEON, Ji-Hun PARK, Tae-Woong HA
doaj   +1 more source