The structural-acoustic coupling vibration problem is very important for the quality control of vehicles and there have already been many studies on this subject. However, as far as we know, no-one has yet considered the physical meaning of the coupling strength. In this paper, we adopt the operator theoretical matrix formulation of the problem and to clarify the meaning of the coupling strength, we introduce a coupling strength parameter ε as a multiplier in front of the non-diagonal coupling terms. We show its adequacy through numerical examples. We use a perturbation series with respect to ε which enables us to express the eigen-pairs for the coupled case by those for the decoupled case. The results of this paper suggest that it would not be necessary to perform time consuming coupling eigenvalue analysis, and hence have a great engineering importance.
|Number of pages||8|
|Journal||Nippon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C|
|Publication status||Published - 1 Jan 1997|