Model updating of the non-linear vibrating structures through Volterra series and proper orthogonal decomposition


Autoria(s): Shiki, S. B.; Lopes Junior, V.; Silva, S. da; Sas, P.; Moens, D.; Jonckheere, S.
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

18/03/2015

18/03/2015

01/01/2012

Resumo

Classical procedures for model updating in non-linear mechanical systems based on vibration data can fail because the common linear metrics are not sensitive for non-linear behavior caused by gaps, backlash, bolts, joints, materials, etc. Several strategies were proposed in the literature in order to allow a correct representative model of non-linear structures. The present paper evaluates the performance of two approaches based on different objective functions. The first one is a time domain methodology based on the proper orthogonal decomposition constructed from the output time histories. The second approach uses objective functions with multiples convolutions described by the first and second order discrete-time Volterra kernels. In order to discuss the results, a benchmark of a clamped-clamped beam with an pre-applied static load is simulated and updated using proper orthogonal decomposition and Volterra Series. The comparisons and discussions of the results show the practical applicability and drawbacks of both approaches.

Formato

2199-2212

Identificador

http://www.isma-isaac.be/past/conf/isma2012/proceedings/papers/isma2012_0010.pdf

Proceedings Of International Conference On Noise And Vibration Engineering (isma2012) / International Conference On Uncertainty In Structural Dynamics (usd2012). Heverlee: Katholieke Univ Leuven, Dept Werktuigkunde, p. 2199-2212, 2012.

http://hdl.handle.net/11449/117716

WOS:000321063902022

Idioma(s)

eng

Publicador

Katholieke Univ Leuven, Dept Werktuigkunde

Relação

Proceedings Of International Conference On Noise And Vibration Engineering (isma2012) / International Conference On Uncertainty In Structural Dynamics (usd2012)

Direitos

openAccess

Tipo

info:eu-repo/semantics/conferencePaper