Full
Outline
To achieve accurate and efficient prediction of mechanical response and crash failure of steel‑aluminum hybrid self‑piercing riveted joints, and support the lightweight and crashworthiness design of steel‑aluminum hybrid vehicle bodies, adaptive mesh technology is adopted to establish an SPR forming simulation model for high‑strength steel and cast aluminum, and the influence law of process parameters on joint forming quality is analyzed. A refined solid model incorporating process history is constructed through residual stress‑strain field mapping, and the joint failure mechanism is revealed combined with mechanical tests. An efficient numerical simulation model for self‑piercing riveting (SPR) is developed and calibrated, and applied to the analysis of vehicle small‑overlap crash conditions. The results show that the error of characteristic cross‑sectional dimensions from forming simulation is no more than 10%; the peak load prediction error of the model considering process history is less than 6%, and that of the efficient SPR model is below 2%. Vehicle‑level simulation can accurately reproduce joint failure and structural deformation behaviors.
59
8
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
