Paper Title:
Crush Performance of Top-Hat Tubular Structures Considering Different Forming Conditions
  Abstract

The influence of forming condition on crash performance of thin-walled structures is investigated, in which high strength low alloy steel HSLA340 and dual phase steel DP590 are considered. Stamping and knife-edge-bending process were carried out respectively to form hat channels, and then, impact tests were performed on the spot-welded top-hat sections subjected to quasi-static and dynamic axial loading conditions to identify the forming effect on the crashworthiness. Regular progressive buckling (quasi-inextensional mode) was observed for knife-edge-bent specimens, while the stamped specimens showed peculiar collapse mode, especially, global instability existed for all the specimens under dynamic impacting and their energy absorption capacity was significantly reduced. The result demonstrates that for accurate assessing the structural performance detailed stamping history of sheet metal components should be taken into consideration.

  Info
Periodical
Advanced Materials Research (Volumes 139-141)
Edited by
Liangchi Zhang, Chunliang Zhang and Tielin Shi
Pages
571-575
DOI
10.4028/www.scientific.net/AMR.139-141.571
Citation
J. H. Niu, P. Zhu, Y. J. Guo, "Crush Performance of Top-Hat Tubular Structures Considering Different Forming Conditions", Advanced Materials Research, Vols. 139-141, pp. 571-575, 2010
Online since
October 2010
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Price
$32.00
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