A Study on Uncertain Vibroacoustic Characteristics of Composite Underwater Shells

LI Kexin; WANG Qingshan; ZHONG Rui

doi:10.11993/j.issn.2096-3920.2026-0027

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LI Kexin, WANG Qingshan, ZHONG Rui. A Study on Uncertain Vibroacoustic Characteristics of Composite Underwater Shells[J]. Journal of Unmanned Undersea Systems. doi: 10.11993/j.issn.2096-3920.2026-0027

Citation:

LI Kexin, WANG Qingshan, ZHONG Rui. A Study on Uncertain Vibroacoustic Characteristics of Composite Underwater Shells[J]. Journal of Unmanned Undersea Systems. doi: 10.11993/j.issn.2096-3920.2026-0027

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A Study on Uncertain Vibroacoustic Characteristics of Composite Underwater Shells

doi: 10.11993/j.issn.2096-3920.2026-0027

LI Kexin^{1, 2
,},
WANG Qingshan^{1, 2
,},
ZHONG Rui^{1, 2}

1.
College of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China
2.
State Key Laboratory of Precision Manufacturing for Extreme Service Performance, Central South University, Changsha 410083, China

Received Date: 2026-01-26
Accepted Date: 2026-03-02
Rev Recd Date: 2026-02-26

Available Online: 2026-03-19

Abstract

Abstract

The existing studies mostly focus on the deterministic analysis of the acoustic and vibration response of underwater composite shells, but the structural parameters, material properties and heavy fluid parameters in actual engineering are uncertain. Therefore, this paper presents an efficient prediction method based on interval analysis and agent model, which is suitable for the prediction of the vibration response of stair structures under heavy fluid environment. The research object is a composite laminated stepped cylindrical shell immersed in infinite domain heavy fluid. Based on the first-order shear deformation theory, energy method and Kirchhoff-Helmholtz integral, a vibration-acoustic coupled analysis model is established. The interval analysis method is introduced to describe the parameter fluctuation. The Kriging agent model is used to replace the time-consuming boundary element operation. The influence of various uncertain parameters on the sound pressure level response of the composite laminated stepped cylindrical shell is studied. On this basis, the deflection phenomenon of the response curve when the uncertain parameters change obviously. The results show that the multi-source uncertainty causes significant frequency shift and response fluctuation range widening. This method fills the gap of the uncertainty vibro-acoustic analysis of complex stepped structures in heavy fluid environment, and achieves the optimal balance between calculation accuracy and efficiency.
- composite laminated stepped cylindrical shell,
- vibration sound characteristic,
- interval uncertainty,
- Kriging model,
- heavy fluid

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References(20)

References

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