LAUSR

About LAUSR
Donate
Contact Us

Follow us:

You are not signed in:

Sign Up!


   Articles with "zero stiffness" as a keyword



Dynamic characteristics of a quasi-zero stiffness vibration isolator with nonlinear stiffness and damping

Sign Up to like & get
recommendations! Published in 2019 at "Archive of Applied Mechanics"

DOI: 10.1007/s00419-019-01541-0

Abstract: A quasi-zero stiffness (QZS) isolator is devised to acquire the feature of high-static-low-dynamic stiffness. Cam–roller–nonlinear spring mechanisms, where two horizontal dampers are installed symmetrically, are employed as a negative stiffness provider to connect in parallel… read more here.

Keywords: quasi zero; frequency; zero stiffness; spring ... See more keywords

Nonlinear vibration of a slightly curved beam with quasi-zero-stiffness isolators

Sign Up to like & get
recommendations! Published in 2018 at "Nonlinear Dynamics"

DOI: 10.1007/s11071-018-4697-9

Abstract: Bending vibration of isolated structures has always been neglected when the vibration isolation was studied. Isolated structures have usually been treated as discrete systems. In this study, dynamics of a slightly curved beam supported by… read more here.

Keywords: vibration; quasi zero; curved beam; zero stiffness ... See more keywords

Isolation performance of a quasi-zero stiffness isolator in vibration isolation of a multi-span continuous beam bridge under pier base vibrating excitation

Sign Up to like & get
recommendations! Published in 2020 at "Nonlinear Dynamics"

DOI: 10.1007/s11071-020-05580-z

Abstract: This paper considers a vibration control problem for a multi-span beam bridge under pier base vibrating excitation by using nonlinear quasi-zero stiffness (QZS) vibration isolators. Three linear springs are needed to construct a nonlinear vibration… read more here.

Keywords: vibration; beam bridge; quasi zero; zero stiffness ... See more keywords

On the characteristics of a quasi-zero-stiffness vibration isolator with viscoelastic damper

Sign Up to like & get
recommendations! Published in 2020 at "Applied Mathematical Modelling"

DOI: 10.1016/j.apm.2020.06.068

Abstract: Abstract Quasi-zero-stiffness (QZS) vibration isolators have been widely studied in previous literature, in which the viscous damping was adopted. In this paper, the QZS isolator with viscoelastic damper is studied, to seek an approach for… read more here.

Keywords: isolator; zero stiffness; viscoelastic damper; quasi zero ... See more keywords

Active control of low-frequency vibrations in ultra-precision machining with blended infinite and zero stiffness

Sign Up to like & get
recommendations! Published in 2019 at "International Journal of Machine Tools and Manufacture"

DOI: 10.1016/j.ijmachtools.2018.11.004

Abstract: Abstract In ultra-precision machining, vibration is the key factor which restricts the machining accuracy and surface quality of a workpiece. Using the traditional active negative-stiffness vibration control technology, the simultaneous suppression of the floor vibration… read more here.

Keywords: control; vibration; low frequency; infinite zero ... See more keywords

Design of a quasi-zero stiffness isolation system for supporting different loads

Sign Up to like & get
recommendations! Published in 2020 at "Journal of Sound and Vibration"

DOI: 10.1016/j.jsv.2020.115198

Abstract: Abstract The quasi-zero stiffness (QZS) vibration isolation system using negative stiffness structure can generally increase the workable frequency range and improve the isolation performance, in comparison with a linear vibration isolator. However, most of the… read more here.

Keywords: system; zero stiffness; quasi zero; isolation ... See more keywords
Photo from wikipedia

A tunable quasi-zero stiffness isolator based on a linear electromagnetic spring

Sign Up to like & get
recommendations! Published in 2020 at "Journal of Sound and Vibration"

DOI: 10.1016/j.jsv.2020.115449

Abstract: Abstract High-static-low-dynamic stiffness (HSLDS) or quasi-zero stiffness (QZS) has attracted a great deal of attention in vibration isolation research. However, most existing HSLDS isolators have a nonlinear stiffness, which may lead to nonlinear behavior under… read more here.

Keywords: isolator; stiffness; electromagnetic spring; zero stiffness ... See more keywords

Energy of quasi-zero stiffness energy harvester under strange non-chaotic attractor.

Sign Up to like & get
recommendations! Published in 2025 at "Chaos"

DOI: 10.1063/5.0281427

Abstract: This study investigates the Quasi-Zero Stiffness Energy Harvester (QZEH), a nonlinear, multi-stable system designed for enhanced energy extraction from vibrating mechanical devices. Nonlinear harvesters, like QZEH and bistable systems, operate over a wider frequency range,… read more here.

Keywords: quasi zero; energy; quasi; attractor ... See more keywords

A single-axis and three-electrode MEMS accelerometer with linear output and zero-stiffness

Sign Up to like & get
recommendations! Published in 2025 at "Journal of Micromechanics and Microengineering"

DOI: 10.1088/1361-6439/addd2c

Abstract: This paper presents a high-performance MEMS accelerometer that utilizes a single set of multi-functional gap-varying double-sided parallel plate (DSPP) capacitors. We propose a self-centering method for the geometric center of the DSPP. The self-centering method… read more here.

Keywords: mems accelerometer; zero stiffness; three electrode; output ... See more keywords

A bidirectional-controllable magnetorheological elastomer-based quasi-zero-stiffness isolator

Sign Up to like & get
recommendations! Published in 2024 at "Smart Materials and Structures"

DOI: 10.1088/1361-665x/ad53ad

Abstract: To enhance the low-frequency vibration isolation bandwidth of quasi-zero stiffness (QZS) isolators under variable amplitude excitations, this paper proposes an adaptive bidirectional-controllable QZS isolator (Bi-QZS) based on magnetic-controlled smart material named magnetorheological elastomer (MRE) as… read more here.

Keywords: quasi zero; bidirectional controllable; isolator; zero stiffness ... See more keywords

Design of piezoelectric quasi— zero—stiffness metastructures for improved low—frequency vibration isolation

Sign Up to like & get
recommendations! Published in 2024 at "Smart Materials and Structures"

DOI: 10.1088/1361-665x/ad811b

Abstract: In this paper, a novel type of piezoelectric quasi–zero stiffness (QZS) metastructure is proposed and the improved vibration isolation performance is investigated. A piezoelectric QZS metastructure is composed of curved beams covered with piezoelectric macro–fiber… read more here.

Keywords: quasi zero; zero stiffness; isolation; piezoelectric quasi ... See more keywords