An improved experimental residual compensation technique in component mode synthesis, called IEFIM (Improved Experimental Free-Interface Method), is developed. This technique is based on a free-interface method which has an advantage that the truncated mode set can be approximated from experimentally obtained frequency response functions (FRFs). The previous experimental CMS (Component Mode Synthesis) techniques have been derived on the MacNeal's formulation. However, the inertia contribution of high-frequency modes is ignored in this formulation. It is because the MacNeal's formulation uses the first-order approximation method compensating only the static residual terms. The proposed IEFIM is more accurate and more efficient than the MacNeal's formulation based on only the static residual compensation. It is because both the static and dynamic residual terms are compensated from experimentally obtained FRFs. Furthermore, it is not necessary to use the FRFs measured only at the frequency point close to 0 Hz. In this paper, a free-interface method is discussed together with an experimental residual compensation technique and then the proposed method is demonstrated for a car-body structure model.
Application of an improved experimental free-interface method to the component mode synthesis of a car-body structure
Anwendung einer verbesserten experimentellen Free-Interface-Methode auf die Bauteilbetriebsartsynthese eines Fahrzeugbaukörpers
2000
9 Seiten, 5 Bilder, 2 Tabellen, 5 Quellen
Aufsatz (Konferenz)
Englisch
British Library Conference Proceedings | 2000
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Online Contents | 2006
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