Double-Sided Surface Structures with Undercuts on Cold-Rolled Steel Sheets for Interlocking in Hybrid Components

联锁 焊接 机械工程 汽车工业 结构工程 还原(数学) 材料科学 工程类 航空航天工程 几何学 数学
作者
Aron Ringel,Sindokht Shayan,David Bailly
出处
期刊:Machines [Multidisciplinary Digital Publishing Institute]
卷期号:12 (8): 562-562 被引量:1
标识
DOI:10.3390/machines12080562
摘要

Weight reduction strategies are essential for the transportation sector to reduce greenhouse gas emissions or extend the range of electric vehicles. In the field of lightweight assembly strategies, multi-material design offers great potential. Joining materials typically used in the automotive sector, such as aluminum and steel, brings challenges as conventional processes such as fusion welding are unsuitable. Therefore, new technologies can extend the design options. In previous studies, a mechanical interlocking between cold-rolled surface structures with undercuts on a steel sheet and die-cast aluminum was presented. This method has now been extended to double-sided structures for more complex applications with a joint on both sheet surfaces. Numerical simulations and validation experiments were performed to investigate the manufacturing of the double-sided structures. Furthermore, the influence of the alignment of the upper and lower structures in relation to each other on the resulting structural geometry and the rolling forces were analyzed. More advantageous geometric parameters, e.g., 24% larger undercuts, and approx. 24.1% lower forming forces at 20% height reduction were observed for a shifted alignment. However, significantly higher wear of the structured rollers occurred in the corresponding experiments.

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