Crashworthiness study of carbon fiber composite passenger compartment B-pillar reinforcement plate under multi-scale lightweight design strategy
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19 mar 2025
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Publicado en línea: 19 mar 2025
Recibido: 15 nov 2024
Aceptado: 15 feb 2025
DOI: https://doi.org/10.2478/amns-2025-0498
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© 2025 Haiyang Yang et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Figure 1.
Figure 2.
Comparison of stiffness results
| Project | Raw steel reinforcement plate scheme | 4.8mm symmetrical paving scheme | |
|---|---|---|---|
| Parameter | Outer plate thickness/mm | 3 | 3 |
| Reinforcing plate thickness/mm | 2.8 | 4.8 | |
| Outer plate mass/kg | 6.25 | 6.25 | |
| Reinforcing plate mass/kg | 2.4 | 0.42 | |
| Mass | Total mass/kg | 8.04 | 6.15 |
| Mode | Torsional mode | 70.98 | 75.36 |
| Bending mode | 148.21 | 155.39 | |
| Axial direction | Deformation/mm | 1.520 | 1.427 |
| Backward direction | Deformation/mm | 9.871 | 9.021 |
| Side direction | Deformation/mm | 8.179 | 7.382 |
| Weight loss | Weight loss ratio of reinforced plate/% | 23.5 | |
| Weight loss/kg | 1.890 |
Comparison of strength results
| Type of test | Maximum displacement D/mm | Maximum contact force FN/N | Failure location | Failure mode | |
|---|---|---|---|---|---|
| Metal material simulation | 98.235 | 34168 | Middle and upper B-column | variant | |
| CFRP simulation | 83.19 | 34850 | |||
| CFRP sample test | Test1 | 83.01 | 32893 | Rigid column down position | fibre breakage |
| Test2 | 82.86 | 33917 | |||
| Test3 | 82.64 | 34289 | |||
| Mean value | 82.84 | 33700 | |||
Comparison of side impact results
| Measured item | Raw steel B-column model | Carbon fiber composite B-column model | ||
|---|---|---|---|---|
| Analysis result | Variation | |||
| B column mass/kg | 4.97 | 3.41 | ↓1.56 | |
| B-column invasion rate(m/s) | Head | 4.1 | 4.3 | ↑0.2 |
| Chest | 6.6 | 5.8 | ↓0.8 | |
| Abdomen | 6.8 | 6.3 | ↓0.5 | |
| Pelvis | 6.7 | 6.2 | ↓0.5 | |
| Door penetration speed(m/s) | Chest | 6.4 | 6.1 | ↓0.3 |
| Abdomen | 7.3 | 6.8 | ↓0.5 | |
| Pelvis | 7.3 | 6.5 | ↓0.8 | |
| B-column intrusion/mm | Head | 58 | 69 | ↑11 |
| Chest | 109 | 101 | ↓8 | |
| Abdomen | 135 | 121 | ↓14 | |
| Pelvis | 133 | 117 | ↓16 | |
| Door penetration/mm | Chest | 138 | 131 | ↓7 |
| Abdomen | 142 | 135 | ↓13 | |
| Pelvis | 145 | 129 | ↓16 | |