Electronic Resource
s.l. ; Stafa-Zurich, Switzerland
Solid state phenomena
Vol. 116-117 (Oct. 2006), p. 255-258
ISSN:
1662-9779
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Physics
Notes:
This paper is concerned with the dynamic characteristics of sinter-forged Cu–Cr alloy forvarious strain-rates. The amount of the chrome content is varied from 10 %wt to 30 %wt in order toinvestigate the influence of the chrome content on the dynamic characteristics. The dynamic responseat the corresponding level of strain-rate should be obtained with an adequate experimental techniqueand corresponding apparatus due to the inertia effect and the stress wave propagation. In this paper,the high speed tensile testing machine is utilized in order to identify the dynamic response of theCu–Cr alloy at the intermediate strain-rates and the split Hopkinson pressure bar is used at the highstrain-rates. Experimental results from both the quasi-static and the high strain-rates up to the 5000/sare interpolated with respect to the amount of the chrome content in order to construct theJohnson–Cook and the modified Johnson–Cook model as the constitutive relation for numericalsimulation of the dynamic impact behavior of electrodes
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/22/transtech_doi~10.4028%252Fwww.scientific.net%252FSSP.116-117.255.pdf
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