Dynamic characteristics of a quasi-zero stiffness vibration isolator with nonlinear stiffness and damping
Sign Up to like & getrecommendations! 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 & getrecommendations! 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 & getrecommendations! 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 & getrecommendations! 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 & getrecommendations! 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 & getrecommendations! 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
A tunable quasi-zero stiffness isolator based on a linear electromagnetic spring
Sign Up to like & getrecommendations! 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