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Effective Viscous Damping Enables Morphological Computation in Legged Locomotion [PDF]

open access: yesFrontiers in Robotics and AI, 2020
Muscle models and animal observations suggest that physical damping is beneficial for stabilization. Still, only a few implementations of physical damping exist in compliant robotic legged locomotion.
An Mo   +5 more
doaj   +4 more sources

Critical response of elastic-plastic SDOF systems with nonlinear viscous damping under simulated earthquake ground motions [PDF]

open access: yesHeliyon, 2019
Multi impulse with constant time interval is used as a representative of a long-duration earthquake ground motion. An analytical expression is derived for the elastic-plastic response of a single-degree-of-freedom (SDOF) model with nonlinear viscous ...
Goki Tamura   +2 more
doaj   +2 more sources

Investigating viscous damping using a webcam [PDF]

open access: yesAmerican Journal of Physics, 2010
We describe an experiment involving a mass oscillating in a viscous fluid. The mechanical oscillator is tracked using a simple webcam, and an image processing algorithm records the position of the geometrical center as a function of time. Interesting information can be extracted from the displacement-time graphs, in particular, for the underdamped case.
Shamim, Sohaib   +2 more
openaire   +3 more sources

Investigation of viscous damping in perforated MEMS devices [PDF]

open access: yesMicrosystems & Nanoengineering
Perforated structures are widely employed in MEMS devices for dissipation control, energy absorption, and performance optimization. Among these, the damping weakening effect is particularly intriguing, attracting considerable attention and widespread ...
Zeyu Jia   +8 more
doaj   +2 more sources

Sensitivity of the Viscous Damping Coefficient of Carbon Fiber in Carbon-Fiber-Reinforced Plastic with Respect to the Fiber Angle

open access: yesCrystals, 2021
The variation in the viscous damping coefficient with the carbon fiber angle can be evaluated using the partial derivatives of the viscous damping coefficient with respect to the resonance frequency and modal damping ratio.
Chan-Jung Kim
doaj   +1 more source

Relationship between Structural Stiffness and Viscous Damping Coefficient in Reinforced Carbon Structure under Varying Carbon Fiber Angles

open access: yesCrystals, 2021
A linearized dynamic model of a carbon-fiber-reinforced plastic (CFRP) structure can be formulated using the structural stiffness and viscous damping coefficient.
Chan-Jung Kim
doaj   +1 more source

VD-PQ; A Velocity-Dependent Viscous Damping Model for Wave-Structure Interaction Analysis

open access: yesJournal of Marine Science and Engineering, 2021
For the analysis and design of coastal and offshore structures, viscous loads represent one of the most influential parameters that dominate their response. Very commonly, the potential flow theory is used for identifying the excitation wave loads, while
Constantine Michailides
doaj   +1 more source

Monitoring of Liquid Viscosity for Viscous Dampers through a Wireless Impedance Measurement System

open access: yesApplied Sciences, 2021
Viscous dampers are a type of seismic damping equipment widely used in high-rise buildings and bridges. However, the viscosity of the damping fluid inside the viscous damper will change over time during its use, which significantly reduces the seismic ...
Sihui Jia, Mingzhang Luo
doaj   +1 more source

Vibration analysis of elevator rope with vibration suppressors (Identification of flexural rigidity, viscous damping and structural damping)

open access: yesNihon Kikai Gakkai ronbunshu, 2021
When an elevator rope for a high-rise building is forcibly excited by the displacement of the building induced by wind force and/or by long-period ground motion, rope displacement becomes large even if the ground acceleration and the building ...
Hiroyuki KIMURA   +2 more
doaj   +1 more source

Viscous Damping of Vibrations in Microtubules [PDF]

open access: yesJournal of Biological Physics, 2000
PokornĂ˝ et al. have recently suggested that metabolic processes drivemicrotubules in a cell to vibrate at Megahertz frequencies, but the theorydoes not explicitly consider dissipative effects which will tend to damp outthe vibrations. To examine the effects of viscous damping on the structure,we determine viscous forces and rate of energy loss in a ...
K R, Foster, J W, Baish
openaire   +2 more sources

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