Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/43856
Title: | A reduced polynomial chaos expansion model for stochastic analysis of a moving load on beam system with non-Gaussian parameters | Authors: | Wu, SQ Law, SS |
Keywords: | Karhunen-loéve expansion Moving load Non-gaussian Reduced polynomial chaos expansion Uncertainty |
Issue Date: | 2015 | Publisher: | Vibromechanika | Source: | Journal of vibroengineering, 2015, v. 17, no. 3, p. 1560-1577 How to cite? | Journal: | Journal of vibroengineering | Abstract: | Stochastic analysis of a load moving on a beam is conducted in which the Spectral Stochastic Finite Element Method (SSFEM) is adopted to simulation the uncertainties in the system parameters and excitation forces. Since the dimension of Polynomial Chaos Expansion (PCE) of the beam responses will exponentially grow with the number of K-L components of the system and excitation uncertainties, this limits the application of the SSFEM. A reduced PCE model is proposed in this paper to improve the computational efficiency. The non-Gaussian random variables in the Karhunen-Loéve Expansion (KLE) of the non-Gaussian system parameters are assumed “uncoupled”. Numerical simulations show that the computational effort can significantly be reduced while accurate predictions on the response statistics can still be achieved. Studies on the effect of different level of randomness in the system parameters and excitation forces show that the proposed method has good performance even with a high level of uncertainty. | URI: | http://hdl.handle.net/10397/43856 | ISSN: | 1392-8716 |
Appears in Collections: | Journal/Magazine Article |
Show full item record
SCOPUSTM
Citations
1
Last Week
0
0
Last month
Citations as of Feb 14, 2019
Page view(s)
104
Last Week
0
0
Last month
Citations as of Feb 18, 2019

Google ScholarTM
Check
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.