Optimization of 3D printed truss meta-structure for structural performance and switchable vibration attenuation

IF 8.1 2区材料科学 Q1 ENGINEERING, MANUFACTURING Composites Part A: Applied Science and Manufacturing Pub Date : 2025-03-03 DOI:10.1016/j.compositesa.2025.108845

Samuel Kim , Hyunsoo Hong , Jaemoon Jeong, Wonvin Kim, Wonki Kim, Gyumin Sim, Jieun Lee, Seong Su Kim

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Abstract

In this study, a truss-based metastructure is proposed that simultaneously considers structural and vibration attenuation performance. To enhance vibration characteristics, the unit cell is designed to induce local resonance and the inertial amplification effect. Finite element analysis (FEA) was conducted to evaluate the compression stiffness and transmissibility of the unit cell with respect to its shape, and the switchable vibration characteristics depending on the presence of water were analyzed through dispersion relation. In addition, an optimal vibration attenuation metastructure satisfying the target stiffness was derived using a genetic algorithm. To validate the FEA results of the optimal structure, the metastructure was fabricated using stereolithography 3D printing, followed by structural and vibration tests. The fabricated truss-based metastructure showed good agreement with the vibration analysis results and excellent vibration reduction characteristics.

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3D打印桁架元结构结构性能优化及可切换减振

本文提出了一种同时考虑结构性能和减振性能的桁架元结构。为了提高振动特性，设计了引起局部共振和惯性放大效应的单元胞。采用有限元分析方法对单晶胞的抗压刚度和透射率进行了分析，并通过色散关系分析了单晶胞在存在水时的可切换振动特性。此外，利用遗传算法推导出满足目标刚度的最优减振元结构。为了验证最优结构的有限元分析结果，采用立体光刻3D打印技术制作了元结构，然后进行了结构和振动测试。预制桁架结构与振动分析结果吻合较好，具有良好的减振性能。

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来源期刊

Composites Part A: Applied Science and Manufacturing 工程技术-材料科学：复合

CiteScore

15.20

自引率

5.70%

发文量

492

审稿时长

30 days

期刊介绍： Composites Part A: Applied Science and Manufacturing is a comprehensive journal that publishes original research papers, review articles, case studies, short communications, and letters covering various aspects of composite materials science and technology. This includes fibrous and particulate reinforcements in polymeric, metallic, and ceramic matrices, as well as 'natural' composites like wood and biological materials. The journal addresses topics such as properties, design, and manufacture of reinforcing fibers and particles, novel architectures and concepts, multifunctional composites, advancements in fabrication and processing, manufacturing science, process modeling, experimental mechanics, microstructural characterization, interfaces, prediction and measurement of mechanical, physical, and chemical behavior, and performance in service. Additionally, articles on economic and commercial aspects, design, and case studies are welcomed. All submissions undergo rigorous peer review to ensure they contribute significantly and innovatively, maintaining high standards for content and presentation. The editorial team aims to expedite the review process for prompt publication.