Failure mechanism and impact resistance of a novel all-composite double-corrugated sandwich plate under low-velocity impact

被引：9
作者：
Qin, Yuhang [1 ]
Xiong, Chao [1 ]
Zhu, Xiujie [1 ]
Yin, Junhui [1 ]
Zhang, Yu [1 ]
Fan, Zhaoyang [1 ]
Zou, Youchun [1 ]
Huang, Zihong [2 ]
机构：
[1] Army Engn Univ, Shijiazhuang Campus, Shijiazhuang 050003, Peoples R China
[2] Chongqing Jiaotong Univ, Coll Electromech & Vehicle Proc, Chongqing 400074, Peoples R China
来源：
CASE STUDIES IN CONSTRUCTION MATERIALS | 2024年 / 20卷
关键词：
Trapezoidal corrugated; CFRP; Drop hammer testing; Finite element model; Impact resistance; BEHAVIOR; OPTIMIZATION;
D O I：
10.1016/j.cscm.2023.e02724
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
A novel composite double trapezoidal corrugated sandwich plate (CDTCSP) was prepared by mold hot pressing and secondary bonding of carbon fiber reinforced polymer (CFRP) prepregs. The DIT302E drop hammer testing machine with a hammerhead of 5.5 kg was selected to realize the impact test of the new corrugated sandwich structure and the all-composite trapezoidal corrugated sandwich plate (CTCSP) with three different energies of 10 J,30 J, and 50 J by changing the height. The failure modes of the two samples were further studied by experimental investigation along with the finite element model established in Abaqus/Explicit. Based on the verified numerical model, the failure process of CDTCSP under 30 J and 50 J impact energy is analyzed. At the same time, the effects of different impact positions and layup angles on the impact resistance of CDTCSP at 10 J energy were evaluated. It can be observed that as the impact energy increases, the peak load of the composite corrugated sandwich plate decreases. Compared with the traditional ones, the impact position has no noticeable effect on the overall impact resistance of CDTCSP. Based on the analysis of CDTCSP with five different layup parameters, it is found that the matrix compression failure extends along the fiber direction, and the peak load of the sample with all the surfacing layup of +/- 45 degrees is 17% larger than that of the sample with 0 degrees.
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页数：24
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