The dynamic analysis of stochastic thin-walled structures under thermal–structural–acoustic coupling

authored by: Juan Ma, Bei Liu, Peter Wriggers, Wei Gao, Bin Yan
Abstract: Random dynamic analysis of the thin-walled structure subjected to coupling loads from three fields is addressed in the frame of the finite element method. Based on the proposed dynamic finite element equation of the deterministic structure under thermal–structural–acoustic coupling, when the randomness of structural physical parameters, temperature load and fatigue test data is fully considered, the dynamic responses of random structure subjected to coupling loads from three fields are dealt with by random factor method. The numerical characteristic values of the random temperature field and that of random dynamic responses are then derived through the moment method of random variables. Subsequently, the dynamic reliability of the stochastic structure under three-field coupling is evaluated using residual strength model, dynamic stress-intensity interference theory and the cumulative damage equal principle. Finally, the results from the methodology proposed are compared with that from Monte-carlo method for a case of numerical example, along with an inspection of the impacts of random variables on dynamic analysis results.
Organisation(s): Institute of Continuum Mechanics
External Organisation(s): Xidian University
University of New South Wales (UNSW)
Type: Article
Journal: Computational mechanics
Volume: 65
Pages: 609-634
No. of pages: 26
ISSN: 0178-7675
Publication date: 03.2020
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Computational Mechanics, Ocean Engineering, Mechanical Engineering, Computational Theory and Mathematics, Computational Mathematics, Applied Mathematics
Electronic version(s): https://doi.org/10.1007/s00466-019-01786-0 (Access: Closed)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{2e60b6f252494f519fec2df415f2dfee,
title = "The dynamic analysis of stochastic thin-walled structures under thermal–structural–acoustic coupling",
abstract = "Random dynamic analysis of the thin-walled structure subjected to coupling loads from three fields is addressed in the frame of the finite element method. Based on the proposed dynamic finite element equation of the deterministic structure under thermal–structural–acoustic coupling, when the randomness of structural physical parameters, temperature load and fatigue test data is fully considered, the dynamic responses of random structure subjected to coupling loads from three fields are dealt with by random factor method. The numerical characteristic values of the random temperature field and that of random dynamic responses are then derived through the moment method of random variables. Subsequently, the dynamic reliability of the stochastic structure under three-field coupling is evaluated using residual strength model, dynamic stress-intensity interference theory and the cumulative damage equal principle. Finally, the results from the methodology proposed are compared with that from Monte-carlo method for a case of numerical example, along with an inspection of the impacts of random variables on dynamic analysis results.",
keywords = "Cumulative damage equal principle, Dynamic reliability, Random dynamic response, Thermal–structural–acoustic coupling",
author = "Juan Ma and Bei Liu and Peter Wriggers and Wei Gao and Bin Yan",
note = "Funding Information: The first author gratefully acknowledges the support of Natural Science Foundation of China through the projects (Grant Nos. 11102143 and 11572233). The support of the Alexander von Humboldt Stifung is also gratefully acknowledged. Moreover, the authors would like to greatly appreciate Prof. Xue XD for his helpful suggestions and the contributions to the revision of this manuscript. Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.",
year = "2020",
month = mar,
doi = "10.1007/s00466-019-01786-0",
language = "English",
volume = "65",
pages = "609--634",
journal = "Computational mechanics",
issn = "0178-7675",
publisher = "Springer Verlag",
number = "3",
}