Engineering Mechanics

Proceedings Vol. 10 (2004)

ENGINEERING MECHANICS 2004

NATIONAL CONFERENCE WITH INTERNATIONAL PARTICIPATION
May 10 – 13, 2004, Svratka, Czech Republic

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Editors: Igor Zolotarev and Alena Poživilová

ISBN 80-85918-88-9 (printed)
ISSN 1805-8248 (printed)
ISSN 1805-8256 (electronic)

list of papers scientific commitee

Statistical and sensitivity analysis of determination of SEA coupling loss factors using a dual modal formulation

Švancara P.
pages 291 - +10p., full text

Statistical Energy Analysis (SEA) is suitable method for analysis of sound and vibration in high-frequency range, but to build a reliable SEA model is necessary correctly determine individual SEA parameters. Especially for subsystems with complex geometry and material may be desirable to use experimental or numerical methods to identify their parameters. In this paper dual modal formulation and Final Element Method (FEM) modal information are used for evaluation of coupling loss factor (CLF). It allows CLF to be determined only from the knowledge of modes of the uncoupled systems. Methodology is illustrated on examples of two connected beams and plates and compared with analytical travelling wave solution. Furthermore are presented statistical and sensitivity analysis of this approach based on Monte Carlo method.

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All papers were reviewed by members of the scientific committee.

Engineering Mechanics

International Conference

Proceedings Vol. 10 (2004)

ENGINEERING MECHANICS 2004