Mechanical response of pyramidal lattice truss core sandwich structures by additive manufacturing

被引：37
|
作者：
Qi, Ge [1 ]
Ji, Bin [2 ]
Ma, Li [1 ]
机构：
[1] Harbin Inst Technol, Ctr Composite Mat, Sci Pk HIT,2 Yi Kuang St,POB 3011, Harbin 150080, Heilongjiang, Peoples R China
[2] Aerosp Syst Engn Shanghai, Shanghai, Peoples R China
来源：
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES | 2019年 / 26卷 / 15期
基金：
中国国家自然科学基金;
关键词：
Sandwich panels; pyramidal truss core; strength; additive manufacturing; mechanical response; PERFORMANCE; FABRICATION; BEHAVIOR; PANELS; SHEAR;
D O I：
10.1080/15376494.2018.1432805
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, metallic pyramidal lattice truss core sandwich structures, including single-layered as well as multi-layered ones, are fabricated from EOS Aluminium AlSi10 Mg, utilizing additive manufacturing method. Out-of-plane and in-plane compression as well as shear tests were carried out in order to measure the stiffness and strength properties of the structures. The out-of-plane compressive strength is determined by buckling of struts, and specimens fail in plastic yielding of face sheets for in-plane tests. And for the shear performance of the specimens, the strength is dominated by the node failure. In addition to experimental testing, finite element models have been developed for simulating the stiffness and strength properties and the numerical results agree well with experimental performance.
引用
收藏
页码：1298 / 1306
页数：9
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