Application of nonlinear normal modes to the design of a vibration isolation system

2006 ◽

Cited By ~ 2

Author(s):

Xiang Yu ◽

Shi-Jian Zhu ◽

Shu-Yong Liu

Keyword(s):

Nonlinear Vibration ◽

Vibration Isolation ◽

Equations Of Motion ◽

Normal Modes ◽

Coupled System ◽

Degree Of Freedom ◽

Isolation System ◽

Vibration Isolation System ◽

Invariant Surfaces ◽

Nonlinear Normal

Nonlinear vibration isolation system (VIS) plays an important role for improving the capability of hydroacoustic stealth of naval vessels. In engineering, Nonlinear VIS is generally a multi-degree-of-freedom system and its mathematical model is a set of coupled differential equations. Nonlinear normal mode (NNM) is an effective tool for decoupling and analyzing the dynamics of this coupled system. In this paper, taking the flexibility of the base into consideration, the equations of motion of an on-board VIS with quadric and cubic nonlinearities is formulated. The NNMs of this multi-degree-of-freedom nonlinear VIS are constructed by using the invariant manifold approach. The invariant surfaces of the NNMs and the decoupled oscillators are presented.

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Connection of a Scanning Tunneling Microscope with a Molecular Beam Epitaxy Chamber and Analysis of the Vibration Isolation System

Journal de Physique III ◽

10.1051/jp3:1995231 ◽

1995 ◽

Vol 5 (11) ◽

pp. 1871-1885 ◽

Cited By ~ 3

Author(s):

P. Krapf ◽

J.P. Lainé(*) ◽

Y. Robach ◽

L. Porte

Keyword(s):

Molecular Beam Epitaxy ◽

Scanning Tunneling Microscope ◽

Molecular Beam ◽

Vibration Isolation ◽

Scanning Tunneling ◽

Isolation System ◽

Vibration Isolation System ◽

Tunneling Microscope ◽

Molecular Beam Epitaxy Chamber

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Characterization of force factor on voice coil actuator for active vibration isolation system

10.1063/5.0051555 ◽

2021 ◽

Author(s):

Muhajir Ab. Rahim

Keyword(s):

Vibration Isolation ◽

Force Factor ◽

Isolation System ◽

Vibration Isolation System ◽

Active Vibration ◽

Active Vibration Isolation ◽

Voice Coil Actuator

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Design and analysis of a vibration isolation system with cam–roller–spring–rod mechanism

Journal of Vibration and Control ◽

10.1177/10775463211000516 ◽

2021 ◽

pp. 107754632110005

Author(s):

Yonglei Zhang ◽

Guo Wei ◽

Hao Wen ◽

Dongping Jin ◽

Haiyan Hu

Keyword(s):

Vibration Isolation ◽

Dynamic Stiffness ◽

Experimental Studies ◽

Excitation Amplitude ◽

Isolation System ◽

Vibration Isolation System ◽

Stiffness Characteristic ◽

Negative Stiffness Mechanism ◽

Isolation Systems ◽

Vibration Isolation Performance

The vibration isolation system using a pair of oblique springs or a spring-rod mechanism as a negative stiffness mechanism exhibits a high-static low-dynamic stiffness characteristic and a nonlinear jump phenomenon when the system damping is light and the excitation amplitude is large. It is possible to remove the jump via adjusting the end trajectories of the above springs or rods. To realize this idea, the article presents a vibration isolation system with a cam–roller–spring–rod mechanism and gives the detailed numerical and experimental studies on the effects of the above mechanism on the vibration isolation performance. The comparative studies demonstrate that the vibration isolation system proposed works well and outperforms some other vibration isolation systems.

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