Results 121 to 130 of about 1,243,170 (300)

A theoretical solution of a water- spherical shell-damping layer interaction system for underwater noise reductions

Based on a fluid-structure interaction analysis (FSIA), the theoretical solution is developed for an integrated spherical shell-damping layer-water interaction system subjected to an internal sinusoidal pressure excitation. The effect of damping layer on
Xing, J.T., Tan, M., Jiang, W.K.
core   +1 more source

Stabilization of the wave equation with localized compensating frictional and Kelvin-Voigt dissipating mechanisms

Electronic Journal of Differential Equations, 2017
We consider the wave equation with two types of locally distributed damping mechanisms: a frictional damping and a Kelvin-Voigt type damping. The location of each damping is such that none of them alone is able to exponentially stabilize the system ...
Marcelo Cavalcanti, Valeria N. Domingos Cavalcanti, Louis Tebou   +2 more
doaj  

Numerical Study on Hydrodynamic Performances of Novel Dual-Layer Flower-Shaped Heave Plates of a Floating Offshore Wind Turbine

Energies
This paper proposes novel designs of dual-layer flower-shaped heave plates, featuring both aligned and staggered configurations with three, six, and nine petals.
Ruosi Zha, Junwen Liang, Jiahao Chen, Xiaodi Wu, Xiaotian Li, Zebin Liang   +5 more
doaj   +1 more source

On the damped oscillations equation with with variable coefficients. [PDF]

Quarterly of Applied Mathematics, 1958
openaire   +1 more source

Multimodal Locomotion in Insect‐Inspired Microrobots: A Review of Strategies for Aerial, Surface, Aquatic, and Interfacial Motion

Advanced Robotics Research, EarlyView.
This review identifies key design considerations for insect‐inspired microrobots capable of multimodal locomotion. To draw inspiration, biological and robotic strategies for moving in air, on water surfaces, and underwater are examined, along with approaches for crossing the air–water interface.
Mija Jovchevska, Kaushik Jayaram, Nicole Xu   +2 more
wiley   +1 more source

Experimental and numerical investigation of elastic wave dispersion and attenuation induced by coal particle damping

Scientific Reports
The collision of skeletal matrix particles in dry coal plays a crucial role in the dispersion and attenuation of elastic waves. Using a low-frequency testing system, acoustic velocity dispersion and energy attenuation experiments were performed across a ...
Hao Chen, Guangui Zou, Xiaolei Feng, Suping Peng, Zhu Gao, Jianhua Wang   +5 more
doaj   +1 more source

Development of a dynamic vibration absorber with adjustment mechanism of spring constant and damping coefficient

Nihon Kikai Gakkai ronbunshu
This paper proposes a simple passive device with an adjustment mechanism for spring constant and damping coefficient to realize a dynamic vibration absorber (DVA) that can be used for various vibration control target frequencies.
Manaya NAITO, Takahiro TOMIOKA, Takehiko TAKAHASHI   +2 more
doaj   +1 more source

A Self‐Healing Permanent Magnet Putty for Soft Robot Skins With Force Sensing and Functional Recovery

Advanced Robotics Research, EarlyView.
Permanent magnet putty (PMP) integrates high‐coercivity NdFeB particles with a dynamic polyborosiloxane–Ecoflex matrix, achieving rapid self‐healing (90% mechanical recovery in 10 s) and magnetic recovery within 20 min. With twice the sensitivity of commercial putties, PMP enables precise 5–30 N force detection and discrimination between pressing and ...
Ruotong Zhao, Mitsuhiro Kamezaki, Ryosuke Dobashi, Yuhiro Iwamoto, Yasushi Ido, Yoshihiro Kawahara   +5 more
wiley   +1 more source

Influence of Boundary Conditions on Damping Properties of Fluid-Saturatedporous Materials

Engineering Transactions, 1991
The object of this paper is the analysis of damping properties of elastic porous media filled with a viscous fluid and, in particular, examination of the influence of boundary conditions and material constants of the medium on the effect of damping. The
S.J. Kowalski, T. Świderski
doaj  

Waveguide Photoactuators: Materials, Fabrication, and Applications

Advanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi, Hemin Pan, Yang Zong, Yongfeng Mei, Jizhai Cui   +4 more
wiley   +1 more source