一种具有低频吸声和隔振性能的新型膜耦合可折叠超材料

IF 6.3 2区材料科学 Q1 MATERIALS SCIENCE, COMPOSITES

Composite Structures Pub Date : 2025-05-22 DOI:10.1016/j.compstruct.2025.119314

Chenhao Dong , Jiafei Gu , Zhao Liu , Robert S. Pierce , Jian Yang , Xiaoling Liu , Xiaosu Yi

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引用次数: 0

摘要

提出了一种新型的膜耦合可折叠超材料，该材料采用质量块作为共振阻尼。研究了该材料的吸声性能、抗压强度和振动控制性能。结果表明，可折叠超材料在具有一定结构性能的同时，可以实现低频吸声。可折叠超材料的吸声特性可以通过改变膜上质量块的大小来调节。此外，建立了具有流体结构相互作用的有限元模拟来复制吸声实验，强调了膜的振动是可折叠超材料吸声的主要来源。发现pla型可折叠超材料比mpp -蜂窝结构具有更好的振动控制性能，同时重量减轻66.2%。cfrp型可折叠超材料的模量和强度分别达到233.02 MPa和3.34 MPa，比传统蜂窝结构的模量和强度分别提高98%和486%。

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A novel membrane-coupled foldable metamaterial with low frequency sound absorption and vibration isolation performance

A novel membrane-coupled foldable metamaterial that incorporates mass blocks for resonant damping is presented in this paper. The sound absorption, compressive strength, and vibration control properties have been studied. The results showed that the foldable metamaterials can achieve low frequency sound absorption while possessing some structural capability. The sound absorption characteristics of the foldable metamaterials were seen to be adjustable by changing the size of the mass blocks on the membranes. Additionally, Finite Element simulations with fluid structural interaction were established to replicate the sound absorption experiments, highlighting the membrane’s vibration as the primary source for sound absorption in the foldable metamaterials. The PLA-type foldable metamaterials were found to have better vibration control than an MPP-honeycomb structure while reducing the weight by 66.2 %. The modulus and strength of the CFRP-type foldable metamaterials could reach 233.02 MPa and 3.34 MPa, respectively, 98 % and 486 % higher than those of a conventional honeycomb structure.

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来源期刊

Composite Structures 工程技术-材料科学：复合

CiteScore

12.00

自引率

12.70%

发文量

1246

审稿时长

78 days

期刊介绍： The past few decades have seen outstanding advances in the use of composite materials in structural applications. There can be little doubt that, within engineering circles, composites have revolutionised traditional design concepts and made possible an unparalleled range of new and exciting possibilities as viable materials for construction. Composite Structures, an International Journal, disseminates knowledge between users, manufacturers, designers and researchers involved in structures or structural components manufactured using composite materials. The journal publishes papers which contribute to knowledge in the use of composite materials in engineering structures. Papers deal with design, research and development studies, experimental investigations, theoretical analysis and fabrication techniques relevant to the application of composites in load-bearing components for assemblies, ranging from individual components such as plates and shells to complete composite structures.