Results 21 to 30 of about 8,017 (257)

Effect of the Time-Varying Damping on the Vibration Isolation of a Quasi-Zero-Stiffness Vibration Isolator

open access: yesShock and Vibration, 2020
This study focuses on the effect of damping changes on the vibration isolation of a quasi-zero-stiffness vibration isolator. A nonlinear-vibration equation for the quasi-zero-stiffness vibration isolator is found and solved using the multiscale method ...
Xin Li, Jinqiu Zhang, Jun Yao
doaj   +1 more source

Research and Analysis of Quasi-Zero-Stiffness Isolator with Geometric Nonlinear Damping

open access: yesShock and Vibration, 2017
This paper presents a novel quasi-zero-stiffness (QZS) isolator designed by combining a tension spring with a vertical linear spring. In order to improve the performance of low-frequency vibration isolation, geometric nonlinear damping is proposed and ...
Qingguo Meng   +4 more
doaj   +1 more source

Dual-Functional Energy Harvesting and Low-Frequency Vibration Attenuation: Electromagnetic Resonant Shunt Series Quasi-Zero-Stiffness Isolators

open access: yesApplied Sciences, 2023
In recent times, there has been a significant focus on electromagnetic resonant shunt damping (ERSD) and quasi-zero-stiffness vibration isolators (QZS VI) as prominent solutions for vibration mitigation or energy harvesting.
Qingchao Yang   +4 more
doaj   +1 more source

Simulation of operation of pneumatic compensator with quasi-zero stiffness in the electric centrifugal submersible pump unit

open access: yesЗаписки Горного института, 2018
The ECSPU pneumatic compensators with quasi-zero stiffness are proposed. The pneumatic compensator with quasi-zero stiffness is suggested to be made in the form of pneumatic spring assemblies having a power characteristic with a positive stiffness ...
A. N. Zotov   +2 more
doaj   +1 more source

Vibro-isolation suspension with quasi-zero stiffness for vibroactive equipment [PDF]

open access: yesОмский научный вестник: Серия "Авиационно-ракетное и энергетическое машиностроение", 2019
The work is devoted to the theory of vibration isolation of vibroactive objects, for example: engines, generators, pumps, compressors, fans, pipelines etc.
Yu. A. Burian, M. V. Silkov
doaj   +1 more source

Uncertainty analysis of quasi-zero stiffness metastructure for vibration isolation performance

open access: yesFrontiers in Physics, 2022
Quasi-zero stiffness (QZS) metamaterials and metastructures have great advantages of being highly integrable and lightweight for vibration isolation in aerospace and aviation applications.
Dongxian Wang   +5 more
doaj   +1 more source

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

open access: yesAdvanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

A six degree of freedom passive vibration isolator with quasi-zero-stiffness-based supporting

open access: yesJournal of Low Frequency Noise, Vibration and Active Control, 2018
A six degree of freedom nonlinear passive vibration isolator is proposed based on Stewart platform configuration with the quasi-zero-stiffness structure as its legs. Due to the high static stiffness and low dynamic stiffness of each leg, the proposed six
Jiying Tuo   +3 more
doaj   +1 more source

Additive Manufacturing of Alumina‐Reinforced Elastomers

open access: yesAdvanced Engineering Materials, EarlyView.
Vat‐photopolymerized elastomers reinforced with platelet‐shaped alumina exhibited preferential orientation, reduced porosity, and significantly enhanced mechanical performance. A 3 wt% platelet loading increased tensile strength from 12.4 to 45.7 MPa, highlighting the critical role of filler morphology in elastomeric VPP composites.
Majid Barzegar Keyvani   +6 more
wiley   +1 more source

Influence of seawater absorption on vibrational and tensile characteristics of quasi-isotropic glass/epoxy composites

open access: yesJournal of Materials Research and Technology, 2019
Glass fibre reinforced composites are common structural materials in civil engineering and marine applications. Exposure to moisture is the key challenge for using fibre-reinforced composites in marine structures.
Acharya Pavan   +4 more
doaj   +1 more source

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