Load-Bearing and Multi-Point Ballistic Performances of Hybrid Sandwich Meta-Structures

ZHENG Bingqian; QIANG Lusheng; SONG Xiaotong; NI Changye; ZHANG Rui

doi:10.21656/1000-0887.450101

Volume 45 Issue 8

Aug. 2024

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Article Navigation > Applied Mathematics and Mechanics > 2024 > 45(8): 1037-1046

ZHENG Bingqian, QIANG Lusheng, SONG Xiaotong, NI Changye, ZHANG Rui. Load-Bearing and Multi-Point Ballistic Performances of Hybrid Sandwich Meta-Structures[J]. Applied Mathematics and Mechanics, 2024, 45(8): 1037-1046. doi: 10.21656/1000-0887.450101

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Load-Bearing and Multi-Point Ballistic Performances of Hybrid Sandwich Meta-Structures

doi: 10.21656/1000-0887.450101

1. State Key Laboratory of New Textile Materials and Advanced Processing Technologies, Wuhan Textile University, Wuhan 430200, P.R.China;
2. School of Textile Science and Engineering, Wuhan Textile University, Wuhan 430200, P.R.China;
3. State Key Laboratory of Mechanics and Control for Aerospace Structures,Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P.R.China

Funds:

The National Science Foundation of China(12302187；12372136)

Received Date: 2024-04-09
Rev Recd Date: 2024-07-05

Available Online: 2024-09-06

Abstract

Abstract

Lightweight, load-bearing, and penetration-resistant integrated meta-structures have significant potential in military equipment and defense facilities, as they can effectively reduce weight and improve space utilization compared to traditional load-bearing structures and armors. Based on hybrid sandwich meta-structures, the load-deflection curves of the meta-structure and the traditional corrugated sandwich under 3-point bending loads were compared. The protective performance and energy absorption mechanism of the meta-structure under multiple ballistic impacts were experimentally studied. The research results indicate that, the hybrid sandwich meta-structure mainly experiences brittle fracture of ceramic, plastic fracture of face-sheets, and debonding of the adhesive layer under bending loads. Its load-bearing capacity is higher than those of traditional corrugated sandwiches. Furthermore, the study also reveals that the impact location and the lattice core type influence the multi-impact resistance of the meta-structure, with the honeycomb core demonstrating superior multi-impact resistance compared to the corrugated core. The corrugated sandwich lacks longitudinal constraints on the ceramic, while the honeycomb core provides stronger constraints on the ceramic, limiting the area of ceramic damage. As a result, the penetration-resistant performance remains relatively consistent as the number of impacts increases.
- meta-structure,
- load-bearing,
- ballistic performance,
- hybrid

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References(15)

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