Crashworthiness of GFRP/aluminum hybrid square tubes under quasi-static compression and single/repeated impact
Thin-walled structures comprised of fiber-reinforced polymer (FRP) composites and metal excel in achieving a balanced design in terms of material cost, weight savings, and mechanical performance. This study aims to explore the crushing characteristics and failure mechanism of square hollow aluminum...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2024-12-01
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| Series: | e-Polymers |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/epoly-2024-0101 |
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| Summary: | Thin-walled structures comprised of fiber-reinforced polymer (FRP) composites and metal excel in achieving a balanced design in terms of material cost, weight savings, and mechanical performance. This study aims to explore the crushing characteristics and failure mechanism of square hollow aluminum tubes wrapped with glass FRP (GFRP) fabricated by vacuum-assisted resin infusion with six types of lay-up directions. Axial quasi-static compression and single/repeated low-velocity impact (LVI) are conducted to investigate their failure evolution and energy absorption properties, such as the specific energy absorption (SEA), mean crushing force (MCF), peak crushing force (PCF), and crushing force efficiency (CFE). The synergy among oblique, axial, and circumferential GFRP ply, which enhances strength and reduces out-of-plane deformation in the structure, is maximized by using the antisymmetric angle ply rather than the single angle ply. Under these three loading modes, the cases with a [0°/90°]2 lay-up have excellent crashworthiness indicators, including PCF, SEA, and MCF. Meanwhile, compared with the pure aluminum tube, both the SEA and CFE are improved simultaneously by up to 158% and 121% during the single LVI test. The study focuses on the influence of stacking configurations on crashworthiness and further explores the potential and application of such hybrid structures. |
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| ISSN: | 1618-7229 |