Power Flow Analysis of Complex Coupled Systems by Progressive Approaches

Xiong, Yeping; Xing, Jing Tang; Price, W.G.

doi:10.1006/jsvi.2000.3159

Cited by 75 publications

(39 citation statements)

References 26 publications

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“…5. The behaviour of the power flow spectrum is supported by numerical results [10]. Based on the parameters described in the previous section, the influence of different variables such as thickness of core, thickness of skin, stiffness of sandwich raft and base structure and the effect of isolators on power transmitted to the flexible foundation are discussed below.…”

Section: Application Of Power Flow Progressive Methodsmentioning

confidence: 99%

“…The equivalent mobility-based power flow progressive approach [10] is applied. The general coupled system consisting of each substructure S 1 , S 2 ; .…”

Section: Application Of Power Flow Progressive Methodsmentioning

confidence: 99%

“…where P i denotes the power flow through any interface of the ith substructure, H the Hermitian transpose, the force vectors and velocity response vectors are determined by the following progressive formulations [10]:…”

Section: Application Of Power Flow Progressive Methodsmentioning

confidence: 99%

“…The fundamental concept of power flow is discussed by Goyder and White [1] and Pinnington and White [2]. In recent years, this approach has been developed and applied to model complex structure [3][4][5][6][7][8][9][10][11][12] and to assess passive, active and vibration control system [8,[13][14][15][16][17]. Langley [3] presented the dynamic stiffness method to investigate forced vibration of a row of stiffened rectangular panels, simply supported along the longitudinal edges.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Power flow analysis for a floating sandwich raft isolation system using a higher-order theory

Choi¹,

Xiong²,

Shenoi³

2009

Journal of Sound and Vibration

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A higher-order sandwich theory is implemented in conjunction with an equivalent mobility-based power flow progressive method to determine power flow for a sandwich configured floating raft vibration isolation system. The power spectrum changes in whole frequency range effectively when core materials' properties change. It is also shown that the loss factors of the sandwich configured floating raft influence the power flow transmitted to the foundation effectively in the medium-to high-frequency range and that the resonant peak cannot be avoided by increasing damping only in highfrequency ranges which is not found in floating raft isolation systems with isotropic beams. r

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Section: Application Of Power Flow Progressive Methodsmentioning

confidence: 99%

“…The equivalent mobility-based power flow progressive approach [10] is applied. The general coupled system consisting of each substructure S 1 , S 2 ; .…”

Section: Application Of Power Flow Progressive Methodsmentioning

confidence: 99%

Section: Application Of Power Flow Progressive Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Power flow analysis for a floating sandwich raft isolation system using a higher-order theory

Choi¹,

Xiong²,

Shenoi³

2009

Journal of Sound and Vibration

Self Cite

View full text Add to dashboard Cite

show abstract

“…The fundamental concept of power flow is discussed by Goyder & White (1980) and Pinnington & White (1981). In recent years, this approach has been applied to model complex structures (Cuschieri 1990;Langley 1990;Xing & Price 1999;Xiong et al 2001Xiong et al , 2003a, structural-acoustic problems (Petersson & Plunt 1982;Su et al 1995) and to assess passive, active or hybrid vibration control systems (Miller et al 1990;Pan et al 1992;Xiong 1996;Xiong et al 2000). To predict input power and power transmission in a system requires knowledge of the excitations (forces or motions) and dynamic responses (motions or forces) derived, for example, by analytical, numerical or experimental mobility or impedance approaches, travelling wave methods, etc.…”

Section: Introductionmentioning

confidence: 99%

A power flow mode theory based on a system's damping distribution and power flow design approaches

2005

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A power flow mode theory is developed to describe the natural power flow behaviour of a dynamic system based on its inherent damping distribution. The system's characteristicdamping matrix is constructed and it is shown that the eigenvalues and eigenvectors of this matrix identify natural power flow characteristics. These eigenvectors, or power flow mode vectors, are chosen as a set of base-vectors spanning the power flow space and completely describe the power flow in the system. The generalized coordinate of the velocity vector decomposed in this space defines the power flow response vector. A timeaveraged power flow expression and theorems relating to its estimation are presented.Based on this theory, power flow design approaches are proposed to identify energy flow patterns satisfying vibration control requirements. The mode control factor defines the measure of the correlation between a power flow mode and a natural vibration mode of the system. Power flow design theorems are presented providing guidelines to construct damping distributions maximizing power dissipation or to suppress/retain a particular vibration mode and/or a motion.The developed damping-based power flow mode theory is compared with a mobilitybased power flow model. It is shown that the proposed power flow model provides insight into the power flow dissipation mechanisms in dynamic systems.Examples are presented to demonstrate the applicability of the power flow mode theory and the power flow design approach. These examples demonstrate the generality of the theory, including non-symmetric damping matrices, and illustrate power flow design applications through modifications of the system's damping distribution using passive and/or active control components.

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An Investigation of Power Flow Characteristics of L-Shaped Plates Adopting a Substructure Approach

Wang¹,

Xing²,

Price³

2002

Journal of Sound and Vibration

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Power Flow Analysis of Complex Coupled Systems by Progressive Approaches

Cited by 75 publications

References 26 publications

Power flow analysis for a floating sandwich raft isolation system using a higher-order theory

Power flow analysis for a floating sandwich raft isolation system using a higher-order theory

A power flow mode theory based on a system's damping distribution and power flow design approaches

An Investigation of Power Flow Characteristics of L-Shaped Plates Adopting a Substructure Approach

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