制造因素对3d打印蜂窝芯软结构复合材料压缩性能的影响

IF 1.9 4区 工程技术 Q3 MECHANICS
Zhixiong Li , Pan Liu , Baixi Chen , Tongtong Ye , Yuan-Fang Zhang , Nan Hu
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引用次数: 0

摘要

软质材料广泛用于从鞋底到桥梁轴承的各种应用中的能量耗散。增材制造的最新进展使更多新型材料成为可能,例如软结构复合材料(SAC),其3d打印核心嵌入到软矩阵中。与单独的软质材料相比,SAC表现出优异的承载能力、延展性和压缩吸能,但关键制造因素的影响尚不清楚。在这项工作中,我们对SAC样品进行了实验研究,考虑了各种制造参数,包括打印材料、体积分数、填充模式和打印参数。值得注意的是,具有旋转填充模式的SAC具有优越的比刚度和比能量吸收。打印参数对SAC的影响是非线性的,且最优值受芯材几何形状的影响。采用优化后的打印参数制备的具有陀螺图案填充的SAC单元在比刚度和比能量吸收方面比具有相同增强相质量的SAC单元有显著提高。这些结果可以指导进一步设计类似结构的复合材料,考虑适当的制造参数选择和几何设计。随着力学性能的提高,SAC的概念可以进一步应用于开发轻量化、高性能的吸耗能元件和器件。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Influence of manufacturing factors on compressive behavior of soft architected composite with a 3D-printed cellular core

Soft material is widely used for energy dissipation in a diverse range of applications from shoe soles to bridge bearings. Recent advances in additive manufacturing enable more new classes of materials such as soft architected composites (SAC) with 3D-printed cores that are embedded into a soft matrix. SAC has demonstrated excellent load-carrying capacity, ductility, and energy absorption under compression compared to soft material alone, but the influence of key manufacturing factors remains unknown. In this work, we conducted experimental investigations on SAC specimens considering various manufacturing parameters, including the printing materials, volume fraction, filling pattern, and printing parameters. Notably, the SAC with the gyroid filling pattern demonstrates superior specific stiffness and specific energy absorption. The effect of the printing parameters on the SAC was non-linear, and the optimal values were influenced by the core geometries. The SAC unit filled with gyroid pattern and manufactured using optimized printing parameters exhibited significant improvement in specific stiffness and specific energy absorption over those with the same mass of reinforcing phase. These results can guide the further design of similar architected composite by considering the appropriate selection of manufacturing parameters and geometric designs. With the improved mechanical properties, the concept of SAC can be further used in developing lightweight and high-performing energy absorption and dissipation components and devices.

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来源期刊
CiteScore
4.10
自引率
4.20%
发文量
114
审稿时长
9 months
期刊介绍: Mechanics Research Communications publishes, as rapidly as possible, peer-reviewed manuscripts of high standards but restricted length. It aims to provide: • a fast means of communication • an exchange of ideas among workers in mechanics • an effective method of bringing new results quickly to the public • an informal vehicle for the discussion • of ideas that may still be in the formative stages The field of Mechanics will be understood to encompass the behavior of continua, fluids, solids, particles and their mixtures. Submissions must contain a strong, novel contribution to the field of mechanics, and ideally should be focused on current issues in the field involving theoretical, experimental and/or applied research, preferably within the broad expertise encompassed by the Board of Associate Editors. Deviations from these areas should be discussed in advance with the Editor-in-Chief.
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