Results 211 to 220 of about 8,017 (257)
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Bursting oscillations in an isolation system with quasi-zero stiffness
Mechanical Systems and Signal Processing, 2021Abstract In this paper, we investigate the bursting oscillations in a vibration isolation system with quasi-zero stiffness to improve the efficiency and reliability. The complex nonlinear dynamics are studied by the bifurcation analysis of both generalized autonomous system and non-autonomous system to reveal the mechanism and modes of bursting ...
Yuntian Zhang, Qingjie Cao, Wenhu Huang
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A torsion quasi-zero stiffness vibration isolator
Journal of Sound and Vibration, 2015Abstract A torsion vibration isolator with quasi-zero stiffness (QZS) is proposed to attenuate the transmission of torsional vibration along a shaft system, which also plays a role of coupling between shafts. A pre-compressed cam–roller mechanism is designed to provide torsional negative stiffness that counteracts with the positive torsion stiffness ...
Jiaxi Zhou, Daolin Xu, Steven Bishop
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Displacement sensing with quasi-zero stiffness structure and flexoelectricity
Smart Materials and Structures, 2023Abstract Flexoelectricity is a strain-gradient-induced electromechanical coupling effect promising for high-resolution sensing. A novel displacement sensing method is developed based on long-range quasi-zero stiffness and flexoelectricity.
Haoyu Gu +4 more
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A Quasi-Zero-Stiffness-Based Sensor System in Vibration Measurement
IEEE Transactions on Industrial Electronics, 2014Quasi-zero-stiffness (QZS) systems have been extensively studied and used as a useful vibration isolation device. In this paper, the feasibility of the application of a QZS system for vibration measurement is investigated. The structural parameters of the QZS system are first analyzed to ensure that the system is staying at stable equilibriums ...
Xiuting Sun +3 more
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A torsion–translational vibration isolator with quasi-zero stiffness
Nonlinear Dynamics, 2019In this paper, a torsion–translational quasi-zero-stiffness (TT QZS) isolator with convex ball–roller mechanisms was proposed to attenuate the torsion and translational vibrations along shaft systems simultaneously. The mathematical model of the isolator was established, based on which the static characteristics of the isolator were analyzed and the ...
Qianlong Zhang +3 more
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A quasi-zero stiffness energy harvesting isolator with triple negative stiffness
Acta Mechanica SinicazbMATH Open Web Interface contents unavailable due to conflicting licenses.
Cai, Xiangyu +3 more
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A Tunable Quasi-Zero Stiffness Mechanism for Thermal Compensation of a MEMS Gravimeter
2021 IEEE 16th International Conference on Nano/Micro Engineered and Molecular Systems (NEMS), 2021For the requirements of high sensitivity and long-term stability of a MEMS gravimeter. This paper presents a tunable quasi-zero stiffness mechanism by a complementary quasi-zero stiffness structure of the pre-shaped bistable beam and conventional folded springs.
Xiaopeng Zhang +6 more
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Study on the Global Bifurcation of Quasi-Zero-Stiffness System
Applied Mechanics and Materials, 2013According to the characteristics of the quasi zero stiffness (QZS) system, a dynamics approximation model is established. The effect of excitation force amplitude, frequency and stiffness on the dynamic characteristics of the system is studied by continuation algorithm. The global bifurcation diagram with a wide range of parameters is achieved by using
Qing Chao Yang +3 more
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On the force transmissibility of a vibration isolator with quasi-zero-stiffness
Journal of Sound and Vibration, 2009In this article the force transmissibility of a quasi-zero-stiffness (QZS) isolator is considered. The isolator comprises a vertical spring and two oblique springs that are either linear, linear with pre-stress or softening nonlinear with pre-stress.
Carrella, A. +3 more
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Archive of Applied Mechanics, 2019
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 with a vertical spring.
Yanqi Liu +4 more
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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 with a vertical spring.
Yanqi Liu +4 more
openaire +1 more source