期刊
COMPOSITE STRUCTURES
卷 153, 期 -, 页码 585-592出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2016.06.060
关键词
Composite; Lattice structure; Sandwich structures; Interlocking; Mechanical property
资金
- National Natural Science Foundation of China [90816024, 11302060]
- Natural Scientific Research Innovation Foundation in Harbin Institute of Technology [HIT.NSRIF.2014025]
- Open-ended fund of Science and Technology on Advanced Composites in Special Environments Laboratory
- Program for Outstanding Young Scholars in Harbin Institute of Technology
The composite pyramidal lattice truss core sandwich panel, in which the lattice core is strengthened by end frames between various nodes and the struts are reinforced with unidirectional fibers, is fabricated by the hot-press molding technique and interlocking method. Because all of the continuous fibers are aligned in the rod direction, the fiber's intrinsic strength can be fully exploited; thus, the lattice truss core has the maximum load-carrying capacity. Furthermore, the composite lattice truss core (strengthened by the top and bottom aluminum connectors) has the ability to collaboratively deform under compressive and shear loading. Compressive and shear experiments were conducted to investigate the mechanical properties and failure mechanism of this new composite pyramidal lattice structure. The experimental results show that the present composite pyramidal lattice structure has some significant advantages compared with other existing composite pyramidal lattice structures. (C) 2016 Elsevier Ltd. All rights reserved.
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