Influence of manufacturing factors on compressive behavior of soft architected composite with a 3D-printed cellular core
Influence of manufacturing factors on compressive behavior of soft architected composite with a 3D-printed cellular core
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DOI：
10.1016/j.mechrescom.2023.104201
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发表时间：
2023-10
影响因子：
2.4
通讯作者：
Zhixiong Li;Pan Liu;Baixi Chen;Tongtong Ye;Yuan- Fang Zhang;Nan Hu
中科院分区：
文献类型：
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作者：
Zhixiong Li;Pan Liu;Baixi Chen;Tongtong Ye;Yuan- Fang Zhang;Nan Hu
软材料广泛用于从鞋底到桥梁支座的各种应用中的能量耗散。增材制造的最新进展使更多新类型的材料成为可能，例如具有嵌入软基质中的3D打印芯的软结构复合材料（SAC）。与单独的软质材料相比，SAC已经表现出优异的承载能力，延展性和压缩下的能量吸收，但关键制造因素的影响仍然未知。在这项工作中，我们进行了实验研究SAC标本考虑各种制造参数，包括印刷材料，体积分数，填充模式，和印刷参数。值得注意的是，具有脑回填充模式的SAC表现出优越的上级比刚度和比能量吸收。印刷参数对SAC的影响是非线性的，并且最佳值受到芯几何形状的影响。与具有相同质量的增强相的SAC单元相比，填充有螺旋图案并使用优化的印刷参数制造的SAC单元在比刚度和比能量吸收方面表现出显著的改善。这些结果可为类似结构复合材料的进一步设计提供指导。随着机械性能的改善，SAC的概念可以进一步用于开发轻质和高性能的能量吸收和耗散组件和设备。
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.