Results 91 to 100 of about 37,005 (331)

Numerical Simulation of Vortex⁃Induced Vibration of Cylinder with Porous Media

open access: yesLiaoning Shiyou Huagong Daxue xuebao
Vortex⁃induced vibration represents a critical mechanism of structural damage,which not only reduced service life of workpieces but can also lead to structural deformation and failure,thereby posing safety risks or causing economic losses.
Yangxi GAI   +4 more
doaj   +1 more source

A Wiener-Laguerre model of VIV forces given recent cylinder velocities [PDF]

open access: yes, 2010
Slender structures immersed in a cross flow can experience vibrations induced by vortex shedding (VIV), which cause fatigue damage and other problems. VIV models in engineering use today tend to operate in the frequency domain.
Maincon, Philippe
core   +4 more sources

Stable Protein‐Based G‐Quadruplex‐Derived Supramolecular Bioinks as Tunable ECM‐Mimetic Constructs Assembled by Combining Non‐Covalent and Covalent Strategies

open access: yesAdvanced Materials, EarlyView.
Harnessing the synergistic interplay of supramolecular self‐assembly, under macromolecular crowding conditions, and enzymatic‐mediated covalent crosslinking toward a stable protein‐based G‐quadruplex‐derived supramolecular bioink. This bioinspired strategy enables the biofabrication of complex and tunable ECM‐mimetic constructs, providing a platform ...
Vera Sousa   +6 more
wiley   +1 more source

Study on Fluid-Induced Vibration Power Harvesting of Square Columns under Different Attack Angles

open access: yesGeofluids, 2017
A model of the flow-vibration-electrical circuit multiphysical coupling system for solving square column vortex-induced vibration piezoelectric energy harvesting (VIVPEH) is proposed in this paper. The quasi steady state theory is adopted to describe the
Meng Zhang, Guifeng Zhao, Junlei Wang
doaj   +1 more source

Experimental study on vortex induced vibration (VIV) of a wide-D-section cylinder in a cross flow

open access: yesTheoretical and Applied Mechanics Letters, 2015
Wake structures and vortex induced vibration (VIV) of a spring-supported wide-D-section cylinder were experimentally investigated using an X-wire, a novel phase-locked particle image velocimetry (PIV), and an acceleration sensor at a low speed wind ...
Qingyang Wang, Mogeng Li, Shengjin Xu
doaj   +1 more source

Experimental investigation of the flow-induced vibration of a curved cylinder in convex and concave configurations [PDF]

open access: yes, 2014
Experiments have been conducted to investigate the two-degree-of-freedom vortex-induced vibration (VIV) response of a rigid section of a curved circular cylinder with low mass-damping ratio.
Assi, Gustavo   +3 more
core   +1 more source

Multifunctional Bio‐Based Packaging for Perishable Foods: Structural Design, Scalable Fabrication, and Versatile Applications

open access: yesAdvanced Materials, EarlyView.
An overview of design principles and scalable fabrication strategies for multifunctional bio‐based packaging. Radiative cooling films, modified‐atmosphere films/membranes, active antimicrobial/antioxidant platforms, intelligent optical/electrochemical labels, and superhydrophobic surfaces are co‐engineered from material chemistry to mesoscale structure
Lei Zhang   +6 more
wiley   +1 more source

Entrainment phenomenon by forced displacement excitation in vortex induced vibration

open access: yesNihon Kikai Gakkai ronbunshu, 2020
This paper deals with the entrainment phenomenon by forced displacement excitation in vortex induced vibration of structures. This phenomenon can occur when a long-period earthquake occurs in a super high-rise structure that may have vortex induced ...
Yutaka YOSHITAKE   +5 more
doaj   +1 more source

Miniature Soft Robot With Magnetically Reprogrammable Surgical Functions

open access: yesAdvanced Materials, EarlyView.
Miniature soft robots have great prospects to revolutionize minimally invasive treatments. Here we present a miniature soft robot, which can be reprogrammed to perform five surgical functionalities with six‐degrees‐of‐freedom motions. This soft robot can prospectively make minimally invasive surgery considerably safer and painless, and enable ...
Chelsea Shan Xian Ng   +4 more
wiley   +1 more source

Analysis of potential helicopter vibration reduction concepts [PDF]

open access: yes, 1985
Results of analytical investigations to develop, understand, and evaluate potential helicopter vibration reduction concepts are presented in the following areas: identification of the fundamental sources of vibratory loads, blade design for low vibration,
Davis, M. W., Landgrebe, A. J.
core   +1 more source

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