Results 31 to 40 of about 1,335,843 (285)

Construction vibration risk assessment of engineering projects based on nonlinear feature algorithm

open access: yesNonlinear Engineering, 2022
In order to study the vibration engineering project construction risk assessment, algorithms based on nonlinear characteristics, a nonlinear feature extraction local linear embedding (LLE) combined with adaptive neuro-fuzzy inference system (ANFIS ...
Liu Li
doaj   +1 more source

The Parameter Design of Nonlinear Energy Sink Installed on the Jacket Pipe by Using the Nonlinear Dynamical Theory

open access: yesApplied Sciences, 2022
The aim of this paper is to investigate the vibration suppression effect of a nonlinear energy sink (NES) on the wind-vortex-induced vibration of deep-water jacket pipes. Based on nonlinear dynamical theories, the coupled dynamic equation of a deep-water
Lianfeng Yang   +4 more
doaj   +1 more source

Nonlinear Vibrations, Stability Analysis, and Control [PDF]

open access: yesMathematical Problems in Engineering, 2010
This paper looks at how important advances in mathematics, physics, biology, economics, and engineering science have shown the importance of the analysis of nonlinear vibrations, instabilities, and strongly coupled dynamical behavior.
CATTANI, Carlo   +2 more
openaire   +7 more sources

A miniature coupled bistable vibration energy harvester [PDF]

open access: yes, 2014
This paper reports the design and test of a miniature coupled bistable vibration energy harvester. Operation of a bistable structure largely depends on vibration amplitude rather than frequency, which makes it very promising for wideband vibration energy
Zhu, Dibin   +5 more
core   +1 more source

Characterization test on nonlinear vibration of the fibre-reinforced composite thin plate

open access: yesMeasurement + Control, 2020
In this research, the characterization test on nonlinear vibration of a fibre-reinforced composite thin plate is studied. First, in order to improve the efficiency and precision of the test, a laser scanning vibration system is designed and developed ...
Hui Li   +4 more
doaj   +1 more source

Gravity‐Dependent Modulation of Downbeat Nystagmus: Insights From Velocity‐Storage Dysfunction

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Downbeat nystagmus varies with head position, a phenomenon termed gravity‐dependent modulation. We aimed to clarify its mechanism using a velocity‐storage model. Methods In 10 patients with downbeat nystagmus due to cerebellar disorders, we recorded eye movements at different pitch‐ and roll‐axis head positions.
Ji‐Hyung Park   +5 more
wiley   +1 more source

Dynamic Characteristics of Flow Induced Vibration in a Rotor-Seal System

open access: yesShock and Vibration, 2011
Flow induced vibration is an important factor affecting the performance of the rotor-seal system. From the point of view of flow induced vibration, the nonlinear models of the rotor-seal system are presented for the analysis of the fluid force, which is ...
Nan Zhang, Ying Liu, Fulei Chu
doaj   +1 more source

Longitudinal Changes in Adiposity After a Youth Sport‐Related Knee Injury: Informing Posttraumatic Osteoarthritis Prevention

open access: yesArthritis Care &Research, EarlyView.
Objective Youth who experience a sport‐related knee injury have elevated odds of becoming overweight or developing obesity in 3 to 10 years, compounding their risk for posttraumatic osteoarthritis (PTOA). To inform prevention strategies, this study compared patterns of adiposity change between youth with a sport‐related knee injury and uninjured youth ...
Justin M. Losciale   +6 more
wiley   +1 more source

On the performance of a nonlinear vibration isolator consisting of axially loaded curved beams [PDF]

open access: yes, 2013
A desirable characteristic for nonlinear vibration isolators is a high static stiffness and a low dynamic stiffness. A curved beam is a possible candidate for this role provided that the amplitude of vibration about the static equilibrium position is ...
Abolfathi, Ali   +2 more
core   +1 more source

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

open access: yesAdvanced 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   +2 more
wiley   +1 more source

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