Fundamental mechanical relations of open-cell metal foam composite materials with reticular porous structure

IF 3.5 3区 材料科学 Q1 ENGINEERING, MECHANICAL Journal of Sandwich Structures & Materials Pub Date : 2024-09-17 DOI:10.1177/10996362241282954
PS Liu
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Abstract

The compressive behavior is one of the most fundamental mechanical properties for engineering materials. In this paper, the octahedral structure model of porous materials is used to evolve the mechanical analysis model under compressive loading for the porous composite materials, which are resulted from reticular metal foams with pore struts presenting multilayered structure. Starting from this analysis model, some fundamental mechanical relationships, including those of the safe load-bearing and overall strength, have been deduced for these porous composite materials. The compressive strength has been characterized for the porous composite body, corresponding to the overall failure caused by the prior breakage of the strut core and by the prior breakage of the strut shell, respectively. The nickel foam products manufactured on the production line of enterprise were used to make porous composite materials by coating the pore struts with epoxy resin, and the metal foam composite material was obtained with the composite pore-struts of metal/resin multilayered structure. Using this porous composite material for compression experiments, it is found that the experimental data match well with the mathematical relationship from the present theoretical model. The results verify the feasibility of this analysis model and the practicality of the relevant mathematical relationship.
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具有网状多孔结构的开孔金属泡沫复合材料的基本力学关系
压缩行为是工程材料最基本的力学性能之一。本文利用多孔材料的八面体结构模型,建立了多孔复合材料在抗压载荷作用下的力学分析模型。从该分析模型出发,推导出了这些多孔复合材料的一些基本力学关系,包括安全承载和整体强度关系。对多孔复合材料主体的抗压强度进行了表征,其分别对应于由支柱核心的先期破损和支柱外壳的先期破损引起的整体失效。利用企业生产线上生产的泡沫镍产品,在孔隙支柱上涂覆环氧树脂,制成多孔复合材料,得到金属/树脂多层结构复合孔隙支柱的金属泡沫复合材料。利用这种多孔复合材料进行压缩实验发现,实验数据与本理论模型的数学关系十分吻合。结果验证了该分析模型的可行性和相关数学关系的实用性。
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来源期刊
Journal of Sandwich Structures & Materials
Journal of Sandwich Structures & Materials 工程技术-材料科学:表征与测试
CiteScore
9.60
自引率
2.60%
发文量
49
审稿时长
7 months
期刊介绍: The Journal of Sandwich Structures and Materials is an international peer reviewed journal that provides a means of communication to fellow engineers and scientists by providing an archival record of developments in the science, technology, and professional practices of sandwich construction throughout the world. This journal is a member of the Committee on Publication Ethics (COPE).
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