Details
| Original language | English |
|---|---|
| Pages (from-to) | 609-634 |
| Number of pages | 26 |
| Journal | Computational mechanics |
| Volume | 65 |
| Issue number | 3 |
| Early online date | 22 Oct 2019 |
| Publication status | Published - Mar 2020 |
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
ASJC Scopus subject areas
- Engineering(all)
- Computational Mechanics
- Engineering(all)
- Ocean Engineering
- Engineering(all)
- Mechanical Engineering
- Computer Science(all)
- Computational Theory and Mathematics
- Mathematics(all)
- Computational Mathematics
- Mathematics(all)
- Applied Mathematics
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In: Computational mechanics, Vol. 65, No. 3, 03.2020, p. 609-634.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - The dynamic analysis of stochastic thin-walled structures under thermal–structural–acoustic coupling
AU - Ma, Juan
AU - Liu, Bei
AU - Wriggers, Peter
AU - Gao, Wei
AU - Yan, Bin
N1 - 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.
PY - 2020/3
Y1 - 2020/3
N2 - 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.
AB - 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.
KW - Cumulative damage equal principle
KW - Dynamic reliability
KW - Random dynamic response
KW - Thermal–structural–acoustic coupling
UR - http://www.scopus.com/inward/record.url?scp=85074567665&partnerID=8YFLogxK
U2 - 10.1007/s00466-019-01786-0
DO - 10.1007/s00466-019-01786-0
M3 - Article
AN - SCOPUS:85074567665
VL - 65
SP - 609
EP - 634
JO - Computational mechanics
JF - Computational mechanics
SN - 0178-7675
IS - 3
ER -