3D printed three-dimensional metallic microlattices with controlled and tunable mechanical properties
3D printed three-dimensional metallic microlattices with controlled and tunable mechanical properties
复制标题
具有受控和可调机械性能的 3D 打印三维金属微晶格
DOI：
10.1016/j.addma.2021.101856
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发表时间：
2021
影响因子：
11
通讯作者：
Panat, Rahul
中科院分区：
文献类型：
--
作者：
Saleh, Mohammad Sadeq;Hu, Chunshan;Brenneman, Jacob;Al Mutairi, Al Muntasar;Panat, Rahul
三维金属微晶格结构对于诸如能量存储和转换、高灵敏度传感器、轻质结构、骨植入物和高效催化剂等领域的进步至关重要。在本文中，气溶胶喷射3D纳米颗粒打印（Saleh等人，2017）[23]用于制造新型高度复杂的三维（3D）金属微晶格材料，其具有直径为30-60 µm的近固体桁架构件和100-400 µm的单元尺寸。三种类型的晶格结构的密度从5%到26%的散装金属被设计为变形通过弯曲为主和屈曲为主的机制下的压缩载荷。这些微晶格的机械响应可以通过改变结构密度以及对单元结构进行简单的改变来调谐。结果表明，AM相关的3D结构中的局部缺陷并没有显着影响其整体应力应变响应。提出了一种改进的半经验泡沫变形模型，以捕获平台应力区有序结构的振荡硬化和软化力学行为，并且适合本研究中打印的所有三种晶格结构。还进行了使用3D梁单元的变形的有限元分析（FEA），其显示出与通过弯曲变形的结构的全局应力-应变响应和局部变形的实验观察一致。还提出了一个具有普遍适用性的理论模型，该模型捕获了微晶格结构在其应力-应变图的平台区域中的周期性硬化和软化行为。研究结果表明，AJ印刷可以用来制造一类新型的微晶格结构，具有可调和可控的机械响应。
Three-dimensional metallic microlattice structures are critical for advancements in areas such as energy storage and conversion, high-sensitivity sensors, light-weight structures, bone implants, and high-efficiency catalysts. In this paper, Aerosol Jet 3D nanoparticle printing (Saleh et al., 2017) [23] is utilized to fabricate novel highly complex three dimensional (3D) metallic microlattice materials having near-solid truss members with diameters of 30–60 µm and unit sizes of 100–400 µm. Three types of lattice structures having densities from 5% to 26% of the bulk metal are designed to deform via bending-dominated and buckling-dominated mechanisms under compressive loads. The mechanical response of these microlattices could be tuned by changing the structure density as well as making simple changes to the cell architecture. It is shown that AM related local defects in the 3D structures did not significantly influence their global stress-strain response. A modified semi-empirical foam deformation model is proposed to capture the oscillating hardening and softening mechanical behavior of ordered structures in the plateau stress region and is fit to all three lattice structures printed in this study. Finite Element Analysis (FEA) of the deformation using 3D beam elements was also performed, which showed an agreement with the experimental observations for both the global stress-strain response and the local deformation for structures that deform by bending. A theoretical model of general applicability is also proposed that captures the periodic hardening and softening behavior of the microlattice structures in the plateau region of their stress-strain plots. The research results establish that AJ printing can be used to fabricate a novel class of microlattice structures with tunable and controlled mechanical response.
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影响因子：
11
作者：
M. S. Saleh;Jie Li;Jonghyun Park;R. Panat
通讯作者：
M. S. Saleh;Jie Li;Jonghyun Park;R. Panat
DOI：
10.1016/j.snb.2016.02.113
发表时间：
2016-07
期刊：
Sensors and actuators. B, Chemical
影响因子：
--
作者：
Yang H;Rahman T;Du D;Panat R;Lin Y
通讯作者：
Lin Y
影响因子：
6
作者：
Saleh, M. Sadeq;HamidVishkasougheh, Mehdi;Panat, Rahul
通讯作者：
Panat, Rahul
影响因子：
13.6
作者：
Saleh MS;Hu C;Panat R
通讯作者：
Panat R
影响因子：
6
作者：
Dou, Rui;Xu, Bojun;Derby, Brian
通讯作者：
Derby, Brian