Uncertainty quantification in modal characteristics of viscoelastic damping structures by using integration approach of adaptive dimension reduction method and stochastic collocation method

T. Wang, C. Xu, N. Guo

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The adaptive dimension reduction method is combined with a stochastic collocation method to quantitatively estimate the variability of modal characteristics in viscoelastic damping structures. For the deterministic solver, the layer-wise finite element is employed to model the viscoelastic damping structures and the shift-invert iteration method is used to solve nonlinear eigenvalue problem. In the uncertainty quantification phase, the high-dimensional model is first decomposed into several low-dimensional component models by the adaptive dimension reduction method. Then, in each component model, the stochastic collocation method (SC) is used for constructing the approximate model with minimal model evaluations. The integration approach is illustrated on two examples. It is shown that the integration approach has efficiency and accuracy advantages over Monte Carlo Simulation and SC method.

Original languageEnglish
Title of host publicationProceedings of ISMA 2020 - International Conference on Noise and Vibration Engineering and USD 2020 - International Conference on Uncertainty in Structural Dynamics
EditorsW. Desmet, B. Pluymers, D. Moens, S. Vandemaele
PublisherKU Leuven - Departement Werktuigkunde
Pages3655-3666
Number of pages12
ISBN (Electronic)9789082893113
StatePublished - 2020
Event2020 International Conference on Noise and Vibration Engineering, ISMA 2020 and 2020 International Conference on Uncertainty in Structural Dynamics, USD 2020 - Leuven, Belgium
Duration: 7 Sep 20209 Sep 2020

Publication series

NameProceedings of ISMA 2020 - International Conference on Noise and Vibration Engineering and USD 2020 - International Conference on Uncertainty in Structural Dynamics

Conference

Conference2020 International Conference on Noise and Vibration Engineering, ISMA 2020 and 2020 International Conference on Uncertainty in Structural Dynamics, USD 2020
Country/TerritoryBelgium
CityLeuven
Period7/09/209/09/20

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