Parameter Design of Nonlinear Dynamic Vibration Absorber

Nonlinear dynamic characteristics of load adaptive quasi-zero stiffness vibration isolator based on electromagnetic and disc spring

To improve low-frequency vibration isolation under varying payloads, a load-adaptive quasi-zero-stiffness (QZS) configuration combining disc springs and a parallel electromagnetic element is theoretically and numerically investigated. Static and nonlinear dynamic models are established, and the harmonic balance metho...

Study on the vibration reduction strategy of tuned mass damper combined with nonlinear energy sink

Nonlinear analysis of a quasi-zero-stiffness vibration isolator with time-delayed position-velocity feedback control

Feedback control methods have been developed to enhance the isolation performance of quasi-zero-stiffness vibration isolators (QZS-VIs). Although most such methods can effectively suppress vibrations within the resonant region, they degrade the isolation performance in the isolation region. Moreover, most feedback cont...

Active quasi-zero stiffness vibration isolator for time-varying load conditions

To resolve the deteriorated vibration isolation performance of existing passive quasi-zero stiffness (QZS) vibration isolators caused by time-varying loads and stiffness mismatch, this paper proposes a novel load-adaptive QZS vibration isolator (LAQVI) based on radial basis function (RBF) neural network adaptive slidin...

Performance-enhanced vibration reduction via a grounded inerter-damper quasi-zero-stiffness dynamic vibration absorber

Design of a Quasi-Zero Stiffness Vibration Isolator Based on Cosine Curved Beams

To improve low-frequency vibration isolation while maintaining load-bearing stability, this paper proposes a quasi-zero-stiffness (QZS) vibration isolator based on cosine-curved flexible beams. The isolator consists of a rigid frame and two mutually perpendicular curved beams, whose geometric nonlinearity is used to re...