000010277 001__ 10277
000010277 005__ 20141205155710.0
000010277 04107 $$aeng
000010277 046__ $$k2008-10-12
000010277 100__ $$aHuang, C.S.
000010277 24500 $$aIdentification of Instantaneous Modal Parameters of a Time Varying Structure Via a Neural Network

000010277 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010277 260__ $$b
000010277 506__ $$arestricted
000010277 520__ $$2eng$$aThe present work develops a novel procedure of establishing a neural network for a time varying system and estimating the instantaneous modal parameters of the system from the established neural network. The connective weights and thresholds in a neural network are assumed as functions of time and are expanded by shape functions constructing by a moving least-squares technique with polynomial basis functions. The instantaneous modal parameters of the system are directly estimated from the connective weights. The feasibility of the proposed procedure is demonstrated by processing numerically simulated dynamic responses of a time-varying linear system. The proposed procedure is also applied to process the dynamic responses of a five-story steel frame, subjected to 10% and 60% of the strength of the Kobe earthquake, in shaking table tests. The steel frame responded nonlinearly when it subjected to 60% Kobe earthquake, while it responded linearly under 10% Kobe earthquake input. This work further assesses the possible damage in the steel frame based on the instantaneous modal parameters identified from the responses corresponding to different strengths of the Kobe earthquake.

000010277 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010277 653__ $$aTime varying, neural network, instantaneous modal parameters, damage assessment

000010277 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010277 720__ $$aHuang, C.S.$$iSu, W.C.$$iChan, C.W.$$iHsu, T.W.
000010277 8560_ $$ffischerc@itam.cas.cz
000010277 8564_ $$s319158$$uhttps://invenio.itam.cas.cz/record/10277/files/05-01-0359.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-01-0359.
000010277 962__ $$r9324
000010277 980__ $$aPAPER