Results 11 to 20 of about 3,082,925 (296)

Spectral Analysis of ATP-Dependent Mechanical Vibrations in T Cells [PDF]

open access: yesFrontiers in Cell and Developmental Biology, 2021
Mechanical vibrations affect multiple cell properties, including its diffusivity, entropy, internal content organization, and thus—function. Here, we used Differential Interference Contrast (DIC), confocal, and Total Internal Reflection Fluorescence ...
Ishay Wohl, Eilon Sherman
doaj   +4 more sources

Passive Attenuation of Mechanical Vibrations with a Superelastic SMA Bending Springs: An Experimental Investigation [PDF]

open access: yesSensors, 2022
This work presents an experimental study related to the mechanical performance of a special design spring fabricated with a superelastic shape memory alloy (SMA-SE).
Richard Senko   +7 more
doaj   +2 more sources

Modelling and Simulation of Micro-electro-Mechanical Systems for Energy Harvesting of Random Mechanical Vibrations [PDF]

open access: yes, 2023
We consider the problem of modelling and analyze nonlinear piezoelectric energy harvesters for ambient mechanical vibrations. The equations of motion are derived from the mechanical properties, the characterization of piezoelectric materials, and the ...
Michele Bonnin
core   +1 more source

Modal Parameter Identification of Structures Using Reconstructed Displacements and Stochastic Subspace Identification

open access: yesApplied Sciences, 2021
A method of modal parameter identification of structures using reconstructed displacements was proposed in the present research. The proposed method was developed based on the stochastic subspace identification (SSI) approach and used reconstructed ...
Xiangying Guo   +3 more
doaj   +1 more source

A Novel Aerodynamic Force and Flutter of the High-Aspect-Ratio Cantilever Plate in Subsonic Flow

open access: yesShock and Vibration, 2020
This paper focuses on the derivation of the aerodynamic force for the cantilever plate in subsonic flow. For the first time, a new analytical expression of the quasi-steady aerodynamic force related to the velocity and the deformation for the high-aspect-
Li Ma   +5 more
doaj   +1 more source

Shock-Induced Vibration of Composite Truss Core Sandwich Plates with Distributed Nonlinear Absorbers by Optimal Locations

open access: yesActuators, 2022
In order to solve the problems of limited installation space and strict additional quality, the effects of internal distributed nonlinear energy sinks (NES) considering optimal locations on a composite truss core sandwich plate are investigated in this ...
Wei Zhang   +4 more
doaj   +1 more source

Vortex-induced vibrations of a long flexible cylinder in shear flow [PDF]

open access: yes, 2010
We investigate the in-line and cross-flow vortex-induced vibrations of a long cylindrical tensioned beam, with length to diameter ratio L/D = 200, placed within a linearly sheared oncoming flow, using three-dimensional direct numerical simulation.
Triantafyllou, Michael S.   +5 more
core   +1 more source

Nonlinear dynamic investigations on rolling element bearings: A review

open access: yesAdvances in Mechanical Engineering, 2018
Rolling element bearings are one of the most precarious components and play an important role in the effective operation of rotating machinery. Bearings are one of the foremost sources of nonlinearity in rotating machineries which significantly affect ...
Aditya Sharma   +3 more
doaj   +1 more source

Active tuning of elastic wave propagation in a piezoelectric metamaterial beam

open access: yesAIP Advances, 2021
In this paper, an active control strategy is employed to actively tune the vibration and wave propagation properties in a piezoelectric metamaterial beam.
Xi-Ning Zhao   +3 more
doaj   +1 more source

Approximate Analytical Methodology for the Restricted Three-Body and Four-Body Models Based on Polynomial Series

open access: yesInternational Journal of Aerospace Engineering, 2016
The restricted three-body problem (R3BP) and restricted four-body problem (R4BP) are modeled based on the rotating frame. The conservative autonomous system for the R3BP and nonautonomous system with period parametric resonance due to the fourth body are
Ying-Jing Qian   +3 more
doaj   +1 more source

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