Paper Title:
New Impact Testing Methods for Sheet Metals Based on SHPB Technique
  Abstract

This paper proposes new impact testing methods applicable to sheet metals both under tension and compression based on widely used split Hopkinson pressure bar (SHPB) technique. Explicit dynamic finite element simulations by using LS-DYNA 3D are systematically conducted for several specimen clamping conditions to seek the appropriate methodologies to realize the two tests. For the tensile test, a method which can reduce stress oscillations that usually appear in the measured stress-strain curves is proposed and is devised to be used with SHPB technique. For the compression test, a candidate which can restrict buckling of the specimen is proposed. The method uses a special die-set sandwiching the sheet metal specimen which is simultaneously compressed without disturbing the planar stress wave to be propagated.

  Info
Periodical
Edited by
S. Itoh and K. Hokamoto
Pages
255-260
DOI
10.4028/www.scientific.net/MSF.566.255
Citation
T. Hasebe, Y. Imaida, "New Impact Testing Methods for Sheet Metals Based on SHPB Technique", Materials Science Forum, Vol. 566, pp. 255-260, 2008
Online since
November 2007
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