Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Random vibration analysis of an uncertain vehicle-track coupled system based on a polynomial dimensional decomposition
In this paper, the uncertainty propagation of an uncertain vehicle-track coupled system (VTCS) subjected to track irregularity is quantified using a polynomial-dimensional decomposition (PDD). Firstly, the conditional power spectral density (PSD) of response related to uncertain parameters is derived using the pseudo-excitation method. Secondly, the PDD surrogate model that can describe the probabilistic characters of the uncertainty propagation is established by conducting the dimensional decomposition to the conditional PSD with component functions and performing the Fourier expansion to the component functions. Finally, the dimensional reduction integration and Gauss integration are introduced to overcome the difficulty of high-dimensional integration when calculating the expansion coefficients. In numerical example, the proposed method is applied to the uncertainty quantification of vertical vibration response of an uncertain VTCS, the accuracy and efficiency of the proposed method are verified by comparing the results of the PDD method with that of Monte-Carlo simulation.
Random vibration analysis of an uncertain vehicle-track coupled system based on a polynomial dimensional decomposition
In this paper, the uncertainty propagation of an uncertain vehicle-track coupled system (VTCS) subjected to track irregularity is quantified using a polynomial-dimensional decomposition (PDD). Firstly, the conditional power spectral density (PSD) of response related to uncertain parameters is derived using the pseudo-excitation method. Secondly, the PDD surrogate model that can describe the probabilistic characters of the uncertainty propagation is established by conducting the dimensional decomposition to the conditional PSD with component functions and performing the Fourier expansion to the component functions. Finally, the dimensional reduction integration and Gauss integration are introduced to overcome the difficulty of high-dimensional integration when calculating the expansion coefficients. In numerical example, the proposed method is applied to the uncertainty quantification of vertical vibration response of an uncertain VTCS, the accuracy and efficiency of the proposed method are verified by comparing the results of the PDD method with that of Monte-Carlo simulation.
Random vibration analysis of an uncertain vehicle-track coupled system based on a polynomial dimensional decomposition
International Journal of Rail Transportation ; 12 ; 233-252
03.03.2024
20 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Random Vibration Analysis of Coupled Three-Dimensional Maglev Vehicle-Bridge System
| DOAJ | 2019
Evolutionary random vibration analysis of coupled vehicle-bridge-pier systems
| British Library Online Contents | 2010
Non-Stationary Random Vibration of the Bridge-Vehicle Coupled System
| British Library Conference Proceedings | 2011
Statistical Moments of Polynomial Dimensional Decomposition
| Online Contents | 2010