首页|A multi-scale uncertainty analysis method based on the Hermite–Chebyshev polynomials for dynamic responses of FRP composite structures with hybrid uncertainties

A multi-scale uncertainty analysis method based on the Hermite–Chebyshev polynomials for dynamic responses of FRP composite structures with hybrid uncertainties

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  • NETL
  • NSTL
  • Elsevier
© 2024 Elsevier LtdMulti-scale hybrid uncertainties in material properties of FRP composites stemming from their manufacturing processes present significant challenges for dynamic analysis and reliability assessment. This paper proposes a multi-scale uncertainty surrogate model based on Hermite–Chebyshev polynomials. The relationship between micro- and macro-scale material properties is established using the Mori–Tanaka method. To demonstrate the efficacy of the proposed method, case studies are conducted on both a FRP wide-flange I-beam structure and a FRP truss bridge. Results indicate that this method accurately determines the probability density functions and cumulative distribution functions of natural frequencies and mode shapes. Notably, the method efficiently computes the upper and lower bounds of dynamic failure probability of FRP truss bridge with high numerical efficiency.

CompositeDynamic reliabilityHybrid uncertaintyMulti-scale analysisSurrogate model

Qian S.-Y.、Zhou X.-Y.、Wang N.-W.

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Department of Bridge Engineering School of Transportation Southeast University

Department of Bridge Engineering School of Transportation Southeast UniversityDepartment of Bridge Engineering School of Transportation Southeast University||Bridge Research Center Southeast University||

Shandong Hi-Speed Engineering Testing Co. Ltd||Key Laboratory for Bridge Structure Big Data Performance Diagnosis and Treatment Improvement of Transportation Industry

2025

10.1016/j.compstruct.2024.118713

Composite structures

Composite structures

SCI
ISSN：0263-8223
年,卷(期)：2025.353(Jan.)
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