Extraction of Fundamental Mode Shapes from Superposition Resonance of a Plate

다국어 초록 (Multilingual Abstract)

This work proposes a method that can extract a set of individual fundamental mode shapes from a set of measured superpositionmode shapes, when a structure possesses two or more mode shapes with the same natural frequency. It is revealed that the number ofnonzero singular values of a set of measured mode shapes indicates the geometric multiplicity resolved in measured mode shapes.Utilizing the sensitivity of singular values resolved in measured mode shapes, an updating algorithm is developed to extract a set ofindividual fundamental mode shapes. The performance of the proposed method is demonstrated using a numerical simulation for aselected class of structures.

참고문헌 (Reference)

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