Mechanical properties of composite bi-directional corrugated sandwich structure

被引：0
|
作者：
Zhou L. [1 ,2 ]
Yao K. [3 ]
Li H. [1 ,2 ]
Chen M. [1 ,2 ]
Fang D. [1 ,2 ]
机构：
[1] Institute of Advanced Structure Technology, Beijing Institute of Technology, Beijing
[2] Beijing Key Laboratory of Lightweight Multi-functional Composite Materials and Structures, Beijing Institute of Technology, Beijing
[3] School of Civil Engineering, Beijing Jiaotong University, Beijing
来源：
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2021年 / 38卷 / 11期
关键词：
Bending; Composite bi-directional corrugated sandwich structure; Compression; Mechanical properties; Preparation process; Shear;
D O I：
10.13801/j.cnki.fhclxb.20210126.001
中图分类号：
学科分类号：
摘要：
To improve the transverse mechanical heterogeneity of conventional uni-directional corrugated sandwich structures, a new type of bi-directional composite corrugated sandwich structure was designed. Considering the difficulty of manufacturing the bi-directional corrugated sandwich structure, a procese based on vacuum assistant resin infusion (VARI) was proposed for high efficiency and quality preparation. The prepared structures were subjected to compression, bending and shear tests. The failure modes and mechanism of the bi-directional composite sandwich structures were analyzed, the strength and modulus of the structure under different load conditions were obtained, and the comparison between the bi-directional and uni-directional corrugated sandwich structure was made. The results show that the glass fiber/epoxy resin core is the main bearing part under the compression load, and the failure of the structure is mainly reflected in the buckling, fracture and delamination of the core. Under the bending load, caused by the lower compressive strength than its tensile strength of fiber, the upper panel first reaches the failure load under the pressure head. The bending failure modes of the structure are mainly the fracture and debonding of upper panel. The shear failure of the structure is mainly caused by the debonding of the foam and the panel and the collapse of the foam, but the core and the panel are not obviously destroyed. Compared with uni-directional corrugated sandwich structure, the mechanical properties of bi-directional corrugated sandwich structure are significantly improved. © 2021, Editorial Office of Acta Materiae Compositae Sinica. All right reserved.
引用
收藏
页码：3661 / 3671
页数：10
相关论文
共 39 条
  • [1] MARTINEZ O A, SANKAR B V, HAFTKA R T, Et al., Micromechanical analysis of composite corrugated-core sandwich panels for integral thermal protection systems, AIAA Journal, 45, 9, pp. 2323-2336, (2007)
  • [2] THILL C, ETCHES J A, BOND I P, Et al., Composite corru-gated structures for morphing wing skin applications, Smart Materials and Structures, 19, 12, pp. 1-10, (2010)
  • [3] KNOX E M, COWLING M J, WINKLE I E J M S., Adhesively bonded steel corrugated core sandwich construction for marine applications, Marine Structures, 11, 4, pp. 185-204, (1998)
  • [4] LIANG C C, YANG M F, WU P W., Optimum design of metallic corrugated core sandwich panels subjected to blast loads, Ocean Engineering, 28, 7, pp. 825-861, (2001)
  • [5] DUBINA D, UNGUREANU V, GiLIA L., Cold-formed steel beams with corrugated web and discrete web-to-flange fasteners, Steel Construction, 6, 2, pp. 74-81, (2013)
  • [6] CARTIE D D, FLECK N A., The effect of pin reinforcement upon the through-thickness compressive strength of foam-cored sandwich panels, Composites Science and Technology, 63, 16, pp. 2401-2409, (2003)
  • [7] PETRAS A, SUTCLIFFE M P F., Failure mode maps for honey-comb sandwich panels, Composite Structures, 44, 4, pp. 237-252, (1999)
  • [8] FENG L J, YANG Z T, YU G C, Et al., Compressive and shear properties of carbon fiber composite square honeycombs with optimized high-modulus hierarchical phases, Composite Structures, 201, pp. 845-856, (2018)
  • [9] FINNEGAN K, KOOISTRA G, WADLEY H N G, Et al., The compressive response of carbon fiber composite pyramidal truss sandwich cores, International journal of materials research, 98, 12, pp. 1264-1272, (2007)
  • [10] XIONG J, MA L, VAZIRI A, Et al., Mechanical behavior of carbon fiber composite lattice core sandwich panels fabri-cated by laser cutting, Acta Materialia, 60, 13-14, pp. 5322-5334, (2012)
1234