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

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ID: 87828
2018
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Ranked #384 of 812 articles by views in Materials (Basel, Switzerland)

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Abstract
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.
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Authors Silva, Diogo F M;Silva, Carlos M A;Bragança, Ivo M F;Nielsen, Chris V;Alves, Luis M;Martins, Paulo A F;
Journal Materials (Basel, Switzerland)
Year 2018
DOI
E1118
URL
Keywords
crash boxes crashworthiness joining by forming resistance spot-welding

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