Power Flow Analysis of Complex Coupled Systems by Progressive Approaches

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

“…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.…”

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

“…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]:…”

“…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.…”

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

“…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.…”