Structural Mode Sensitivity to Local Modification The Aerospace Corporation, El Segundo, CA

Format:

Conference/Event

Author/Creator:

Coppolino, R. N., author.

Conference Name:

Aerospace Congress & Exposition (1981-10-05 : Anaheim, California, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1981

Summary:

An efficient approximate technique for vibration mode re-analysis of a locally damaged or altered structure is introduced. The method employs a truncated set of original structure modes, augmented by an appropriate set of residual vectors, to form a reduced description of the damaged structure. The desired lowest frequency modes of the locally changed structure are computed on the basis of the reduced representation. Practical test cases, consisting of complex offshore oil platforms, illustrate the value of the new technique to accurately predict modal parameter changes at very substantial computational savings with respect to complete re-analysis of the structure

Notes:

Vendor supplied data

Publisher Number:

811044

Access Restriction:

Restricted for use by site license