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2015 | OriginalPaper | Buchkapitel

A New Direct Method for Updating Mass and Stiffness Matrices with No Spillover

verfasst von : Jiafan Zhang, Huajiang Ouyang, Jun Yang

Erschienen in: Vibration Engineering and Technology of Machinery

Verlag: Springer International Publishing

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Abstract

A direct method for model updating of mass and stiffness matrices of structures without spillover is presented, which requires the knowledge of only the few eigenpairs to be updated of the original undamped model. Upon a necessary and sufficient condition, proposed previously by authors, for the incremental mass and stiffness matrices that modify some eigenpairs while keeping other eigenpairs unchanged, the finite element model updating problem that preserves symmetry and avoids spillover is formulated as a semi-definite programming problem, which can be efficiently solved by existing semi-definite programming algorithms. Numerical examples are given to demonstrate the accuracy and effectiveness of the presented updating method.

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Titel: A New Direct Method for Updating Mass and Stiffness Matrices with No Spillover
verfasst von: Jiafan Zhang
Huajiang Ouyang
Jun Yang
Verlag: Springer International Publishing
Buch: Vibration Engineering and Technology of Machinery
Print ISBN: 978-3-319-09917-0

Electronic ISBN: 978-3-319-09918-7

Copyright-Jahr: 2015
DOI: https://doi.org/10.1007/978-3-319-09918-7_54

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