Results 31 to 40 of about 91,375 (296)

Development of a Methodology for Seismic Design of Framed Steel Structures Incorporating Viscous Dampers

Eng
This study develops empirical equations relating viscous damping ratios (ξ) and damper coefficients (c) in steel structures for seismic design applications.
Panagiotis Diamantis, Panagiota Katsimpini, George D. Hatzigeorgiou   +2 more
doaj   +1 more source

A time-domain method for free vibration responses of an equivalent viscous damped system based on a complex damping model

Journal of Low Frequency Noise, Vibration and Active Control, 2023
The free vibration responses are divergent based on a complex time-domain damping model. The traditional step by step integration method cannot be used to calculate the time-domain responses.
Shuxia Wang, Jiajun He, Jia Fan, Panxu Sun, Dongwei Wang   +4 more
doaj   +1 more source

Semi-Active Cable Damping to Compensate for Damping Losses Due to Reduced Cable Motion Close to Cable Anchor

Applied Sciences, 2022
The relative motion of transverse cable dampers is smaller than predicted by the taut string model because of the effects of bending stiffness and fixed support conditions.
Felix Weber, Simon Spensberger, Florian Obholzer, Johann Distl, Christian Braun   +4 more
doaj   +1 more source

Modal Coefficients Identification Using Wavelet Transform [PDF]

International Journal of Advanced Design and Manufacturing Technology, 2011
Identification of damping parameter is usually more complicated and unreliable comparing to mass or stiffness identification in structural dynamics. There are many factors such as intermolecular friction, Coulomb friction and Viscous damping affecting ...
Hasan Jalali, Fardin Parvizi
doaj  

Match of Negative Stiffness and Viscous Damping in a Passive Damper for Cable Vibration Control

Shock and Vibration, 2019
Match of negative stiffness and viscous damping in a passive negative stiffness damper (NSD) is studied for the vibration control of stay cables in this paper.
Peng Zhou, Qinghe Fang
doaj   +1 more source

Identification and evaluation of linear damping models in beam vibrations [PDF]

, 1969
Sensitive method, identifying effective damping mechanisms, involves comparing experimentally determined ratio of first to second mode magnification factors related to common point on beam.
Boers, B. L., Rosenberg, G. S., Wambsganss, M. W., Jr.   +2 more
core   +1 more source

The role of damped Alfven waves on magnetospheric accretion models of young stars [PDF]

, 2002
We examine the role of Alfven wave damping in heating the plasma in the magnetic funnels of magnetospheric accretion models of young stars. We study four different damping mechanisms of the Alfven waves: nonlinear, turbulent, viscous-resistive and ...
Basri G., Burke A. T., Camenzind M., dos Santos L. C., Goncalves D. R., Guenther E. W., Hollweg J. V., Jafelice L. C., Jatenco-Pereira V., Jatenco-Pereira V., Lynden-Bell D., M. J. Vasconcelos, R. Opher, Scheurwater R., Umebayashi T., V. Jatenco‐Pereira   +15 more
core   +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

Spatially Tailorable Liquid Crystalline Elastomer Alignment During Digital Light Process 3D Printing

Advanced Functional Materials, EarlyView.
Here, we report the fabrication of 3D printable liquid crystalline elastomer (LCE) structures with spatially tailorable alignment domains within the same layer. This work addresses the long‐standing challenge of preparing complex 3D LCE architectures with patterned functional domains to achieve nonlinear deformations. Fabrication of multi‐domains in 3D
Adam Bischoff, Saman Jamshididana, Zach Miller, Kassandra Hernandez, Nicolas Gonsalves, Andre Olarra, Elliot Yoo, Jeremy A. Herman, Devin J. Roach   +8 more
wiley   +1 more source

Damping effects of a stay cable attached with a viscous damper and a high damping rubber damper considering cable bending stiffness and damper support flexibility

Advances in Bridge Engineering
To mitigate cable oscillations in cable-stayed bridges, a common approach involves using a strategically positioned viscous damper near the cable’s anchorage and bridge deck. However, for longer cables, this method may be insufficient due to installation
Duy Thao Nguyen, Si Quanh Chau, Hoang Nam Phan   +2 more
doaj   +1 more source