Energy absorption and vibration characteristics of metal/polymer composited pyramidal lattice cylinder structure

IF 3.9 2区工程技术 Q1 ENGINEERING, CIVIL

Structures Pub Date : 2025-04-13 DOI:10.1016/j.istruc.2025.108878

Xin Xue , Jin Gao , Chao Zheng , Zeyu Li , Juan Liao , Mangong Zhang

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引用次数: 0

Abstract

The integration performance of rigid and flexible materials in composite structures is of particular interest and complexity. In this work, the lattice structure of the steel rod mesh cylinder skeleton was used to fabricate a composite structure by combining it with polyurethane (PU) as the matrix. The objective is to investigate the correlation between design structure and mechanical response associated with the combination of the metallic skeleton and polymer materials. Besides the energy absorption obtained from quasi-static loading, the vibration characteristics via a sinusoidal dynamic excitation test were analyzed by using the phonon and bandgap theory. The experimental results show that the addition of polyurethane increases the vibration suppression performance of the composite structure. The band diagram and the compress curves show that the energy absorption properties of the metal/polymer composited lattice structure are positively related to the rod diameter, whereas the influence of the rod diameter on the vibration suppression properties is opposite. The increase of axial angle has a negative influence on the energy absorption properties but improves the vibration suppression properties.

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金属/聚合物复合金字塔晶格柱结构的能量吸收与振动特性

刚性和柔性材料在复合结构中的集成性能是一个特别有趣和复杂的问题。本研究利用钢杆网筒骨架的点阵结构，以聚氨酯（PU）为基体，制备复合结构。目的是研究与金属骨架和高分子材料组合相关的设计结构和力学响应之间的相关性。除了准静态加载获得的能量吸收外，还利用声子和带隙理论分析了正弦动态激励试验的振动特性。实验结果表明，聚氨酯的加入提高了复合材料结构的抑振性能。带线图和压缩曲线表明，金属/聚合物复合晶格结构的吸能性能与棒直径呈正相关，而棒直径对抑制振动性能的影响相反。轴向角的增大对吸能性能有负面影响，但对减振性能有改善作用。

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

Structures Engineering-Architecture

CiteScore

5.70

自引率

17.10%

发文量

1187

期刊介绍： Structures aims to publish internationally-leading research across the full breadth of structural engineering. Papers for Structures are particularly welcome in which high-quality research will benefit from wide readership of academics and practitioners such that not only high citation rates but also tangible industrial-related pathways to impact are achieved.