2710 加振位置の選択による振動インテンシティ分布の設計(J20-3 流体関連の騒音と振動(3) 流れの制御と騒音,ジョイントセッション,21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

概要

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Structural intensity presents the energy flow on structures. This paper discusses a structural intensity design method with selection of excitation position with a modal expansion of structural intensity which is expressed by superposition of modal terms expressed by the product of weight coefficients and "cross-modal functions" as a modal expansion of displacement Weight coefficient is presented by the material properties, excitation condition, and two modes with or without spatial derivatives at excitation point. Cross-modal function is presented by the product of two modes with or without spatial derivatives. Weight coefficients change by a excitation position movement but cross-modal functions not. In this paper, numerical simulation on of bending vibration on plates carried out to show the method which emphasizes a weight coefficient with movement of excitation position.
社団法人日本機械学会の論文
2008-08-02