The shielding effect of SH wave propagation in porous unidirectional infinite enclosed structure

IF 7.6 2区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials & Design Pub Date : 2025-04-26 DOI:10.1016/j.matdes.2025.114003

Zhiyu Fan , Hui Qi , Runjie Yang , Hao Wu , Yufeng Zhang , Jing Guo

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Abstract

The wave dynamics within the porous unidirectional infinite enclosed structure involve the coupling of multiple scattering wave fields under complex boundary conditions. With specific frequency bands and structural designs, optimal absorption and shielding effects can be achieved. Currently, there is still a lack of comprehensive theoretical models that can efficiently and accurately analyze the shielding effect. This paper develops an accurate analytical method based on the wave function expansion for analyzing wave shielding in porous structures. Based on the multi-direction cumulative mirroring method, the reflection and scattering problems of shear-horizontal wave (SH wave) propagation at structural and pore boundaries are resolved. Through comprehensive set of visualization analysis steps, the full-domain dynamic wave response is presented. This approach enables quantitative and qualitative analysis of coupled wave amplitude distribution, shielded frequency bands, and shielding coefficients under variations in frequency bands, pore numbers, inter-pore spacing, and structural dimensions. This provides a robust framework for understanding and predicting wave propagation behavior in porous media. In addition, an analytical computing software has been developed for practical engineering applications, which improves the efficiency and accuracy of shielding wave structural optimization design and provides guidance on optimizing absorption and shielding effects of porous structures in practical engineering.

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多孔单向无限封闭结构中SH波传播的屏蔽效应

多孔单向无限封闭结构内部的波动动力学涉及复杂边界条件下多个散射波场的耦合。通过特定的频段和结构设计，可以达到最佳的吸收和屏蔽效果。目前，还缺乏能够高效、准确地分析屏蔽效应的综合理论模型。本文提出了一种基于波函数展开的精确解析方法来分析多孔结构中的波屏蔽。基于多方向累积镜像方法，解决了剪切水平波（SH波）在结构和孔隙边界处的反射和散射问题。通过一套完整的可视化分析步骤，给出了全域动态波响应。该方法可以定量和定性地分析耦合振幅分布、屏蔽频带和屏蔽系数在频带、孔隙数、孔间间距和结构尺寸变化下的变化。这为理解和预测波在多孔介质中的传播行为提供了一个强有力的框架。此外，还开发了面向实际工程应用的解析计算软件，提高了屏蔽波结构优化设计的效率和精度，为实际工程中多孔结构的吸收和屏蔽效果优化提供了指导。

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来源期刊

Materials & Design Engineering-Mechanical Engineering

CiteScore

14.30

自引率

7.10%

发文量

1028

审稿时长

85 days

期刊介绍： Materials and Design is a multi-disciplinary journal that publishes original research reports, review articles, and express communications. The journal focuses on studying the structure and properties of inorganic and organic materials, advancements in synthesis, processing, characterization, and testing, the design of materials and engineering systems, and their applications in technology. It aims to bring together various aspects of materials science, engineering, physics, and chemistry. The journal explores themes ranging from materials to design and aims to reveal the connections between natural and artificial materials, as well as experiment and modeling. Manuscripts submitted to Materials and Design should contain elements of discovery and surprise, as they often contribute new insights into the architecture and function of matter.