Bandgap characteristics of rib-stiffened plates with fluid–structure interaction: A finite element approach

IF 3.4 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Mechanics of Materials Pub Date : 2025-02-03 DOI:10.1016/j.mechmat.2025.105260

L.B. Hu , X. Zhou , R.Z. Zhang , Z.-Q. Xiao , Y. Cong , S.T. Gu

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Abstract

This work offers a comprehensive investigation into the vibration band gaps of periodically rib-stiffened plates, incorporating the effects of fluid–structure interaction (FSI). By coupling the Mindlin plate theory with Timoshenko beam theory, the proposed model enables flexible arrangements of ribs within the plate structure, enhancing its design versatility. The inertial effects of the surrounding fluid are rigorously accounted for through an augmented mass matrix, which includes Bloch periodic boundary conditions, providing a robust framework for capturing the FSI phenomena. Numerical validations confirm the accuracy of both the rib-stiffened plate model in the absence of fluid and the FSI-integrated model. A systematic exploration of vibration band gaps is conducted, emphasizing the influence of various rib configurations under fluid–structure interaction. Detailed parametric analysis of orthogonally rib-stiffened plates reveals that specific rib designs play a crucial role in tuning the band gaps, offering valuable insights for optimizing vibro-acoustic performance in engineering applications.

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考虑流固耦合的肋加筋板带隙特性：有限元方法

本文对周期性肋加筋板的振动带隙进行了全面的研究，并考虑了流固耦合（FSI）的影响。通过将Mindlin板理论与Timoshenko梁理论相结合，提出的模型可以在板结构内灵活布置肋，增强其设计的通用性。周围流体的惯性效应通过增广质量矩阵得到了严格的解释，其中包括布洛赫周期边界条件，为捕获FSI现象提供了一个强大的框架。数值验证验证了无流体条件下肋加筋板模型和fsi集成模型的准确性。对振动带隙进行了系统的研究，强调了不同肋形对流固耦合的影响。对正交肋加筋板的详细参数分析表明，特定的肋设计在调节带隙中起着至关重要的作用，为优化工程应用中的振动声学性能提供了有价值的见解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Mechanics of Materials 工程技术-材料科学：综合

CiteScore

7.60

自引率

5.10%

发文量

243

审稿时长

46 days

期刊介绍： Mechanics of Materials is a forum for original scientific research on the flow, fracture, and general constitutive behavior of geophysical, geotechnical and technological materials, with balanced coverage of advanced technological and natural materials, with balanced coverage of theoretical, experimental, and field investigations. Of special concern are macroscopic predictions based on microscopic models, identification of microscopic structures from limited overall macroscopic data, experimental and field results that lead to fundamental understanding of the behavior of materials, and coordinated experimental and analytical investigations that culminate in theories with predictive quality.