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On the Performance of Thin-Walled Crash Boxes Joined by Forming

机译:成形连接薄壁碰撞盒的性能

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摘要

A new joining by forming process that combines lancing and shearing with sheet-bulk compression is utilized to assemble thin-walled crash boxes utilized as energy absorbers. Process design and fabrication of the new crash boxes are analyzed by finite elements and experimentation. Axial crush tests were performed to compare the overall crashworthiness performance of the new crash boxes against that of conventional crash boxes assembled by resistance spot-welding. Results show that the joining process is a good alternative to resistance spot-welding because the new crash boxes can absorb the same crushing energy, and because the new process helps to overcome typical manufacturing problems of welding.
机译:结合了柳叶刀切入和剪切与片材大块压缩的成型加工新工艺,用于组装用作能量吸收器的薄壁防撞箱。通过有限元和实验分析了新碰撞盒的工艺设计和制造。进行了轴向挤压测试,以比较新碰撞盒与通过电阻点焊组装的传统碰撞盒的整体耐撞性能。结果表明,由于新的碰撞盒可以吸收相同的破碎能量,并且新工艺有助于克服焊接的典型制造问题,因此该连接工艺是电阻点焊的良好替代方案。

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