Modeling and Dynamic Analysis for Rigid-Flexible Coupling Nonlinear Floating Raft Vibration Isolation System

Zhang, Xing; He, Qi; Xiang, Yu

doi:10.4028/www.scientific.net/amm.34-35.1994

Cited by 4 publications

(3 citation statements)

References 1 publication

(1 reference statement)

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“…Gardonio et al [3] established the vibration transmission equation of a low frequency isolation system based on multirigid-body dynamics. Zhang et al [4] analyzed the influence of the nonlinearity of the rigid-flexible coupling nonlinear floating raft vibration isolation system through the theory of flexible multibody dynamics and some typical nonlinear phenomena, such as subharmonics, superharmonics, and attractor coexistence, were observed through time domain analysis. However, the method on the basis of the neglecting of the flexibility of the system is largely limited and, besides, it also can lead to serious deviation.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Modeling and Characteristic Analysis of Floating Raft System with Attached Pipes

Ren

Huang

et al. 2017

Shock and Vibration

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The vibration transmission performance of a floating raft system with attached pipes is investigated in this paper. The frequency response function-based (FRF-based) substructure synthesizing method whose accuracy has been verified by numerical simulations and experiment is applied for modeling the system. The power flow through the transmission paths is used for exploring the additional vibration transmission path provided by the attached pipes. The results show that the existence of the additional transmission paths caused by the pipes breaks the symmetries of the system, which leads to the enhancement of the coupling between each substructure. Consequently, it degrades the vibration isolation performance of the raft system. Moreover, a parametric study is performed to investigate the effects on the mean-square velocity of the hull of the attached pipes, which gives a brief guideline for designing the attached pipes.

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Section: Introductionmentioning

confidence: 99%

Dynamic Modeling and Characteristic Analysis of Floating Raft System with Attached Pipes

Ren

Huang

et al. 2017

Shock and Vibration

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“…Studies of modeling for flexible raft system have recently become hot topics [1][2][3][4][5][6].The modeling of raft frame and machine in flexible raft system have always been difficult issues. In the previous proposed methods, modal expansion is utilized to build up the model of raft frame which caused complex procedure of theoretical derivation.…”

Section: Introductionmentioning

confidence: 99%

Modeling Research on Global Flexible Floating Raft Isolation System

Wang¹,

Zhi-gao²

2017

dtetr

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“…In recent years, the nonlinear dynamic responses of rotor-bearing system have been analyzed and described in literature [1]. Niu et al [2] researched the behaviors and the design principles of active floating-raft isolation system and investigated their power transmission [3]. Niu and Song [4] analyzed the influence of the nonlinearity of floating-raft vibration isolation system, and Wang et al [5] developed the dynamic modeling of elastic floating-raft system on theory of multibody dynamics and structural dynamics.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Dynamic Behaviors of a Marine Rotor-Bearing System Coupled with Air Bag and Floating-Raft

Xiao

2015

Shock and Vibration

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To understand the nonlinear dynamic mechanism of a rotor-bearing system coupled with air bag and floating-raft, the dynamic characteristics of the system are investigated. This work has two key objectives. First, the vibration mechanism of rotor-bearing system coupled with air bag and floating-raft is investigated by developing a numerical model. Then, the nonlinear dynamics of the system and the effect of several parameters are studied, which includes the steady-state response and its spectrum, the orbit and its Poincaré map, the bifurcation diagram, and largest Lyapunov exponent (LLE). The results show that at low speed the dynamic behavior appears in a single periodic motion, and, with the increase of the speed, the motion becomes quasi-periodic and chaotic. These performances indicate that the air bag and floating-raft introduce some dynamic effects of marine rotor-bearing system.

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Modeling and Dynamic Analysis for Rigid-Flexible Coupling Nonlinear Floating Raft Vibration Isolation System

Cited by 4 publications

References 1 publication

Dynamic Modeling and Characteristic Analysis of Floating Raft System with Attached Pipes

Dynamic Modeling and Characteristic Analysis of Floating Raft System with Attached Pipes

Modeling Research on Global Flexible Floating Raft Isolation System

Nonlinear Dynamic Behaviors of a Marine Rotor-Bearing System Coupled with Air Bag and Floating-Raft

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