Paper Title:
Strain-Rate Effect on the Tensile Behaviour of High Strength Alloys
  Abstract

In this paper the first results of the mechanical characterization in tension of two high strength alloys in a wide range of strain rates are presented. Different experimental techniques were used for different strain rates: a universal machine, a Hydro-Pneumatic Machine and a JRC-Split Hopkinson Tensile Bar. The experimental research was developed in the DynaMat laboratory of the University of Applied Sciences of Southern Switzerland. An increase of the stress at a given strain increasing the strain-rate from 10-3 to 103 s-1, a moderate strain-rate sensitivity of the uniform and fracture strain, a poor reduction of the cross-sectional area at fracture with increasing the strain-rate were shown. Based on these experimental results the parameters required by the Johnson-Cook constitutive law were determined.

  Info
Periodical
Chapter
Chapter 1: Performance of Materials
Edited by
Ezio Cadoni and Marco di Prisco
Pages
124-129
DOI
10.4028/www.scientific.net/AMM.82.124
Citation
E. Cadoni, M. Dotta, D. Forni, S. Bianchi, "Strain-Rate Effect on the Tensile Behaviour of High Strength Alloys", Applied Mechanics and Materials, Vol. 82, pp. 124-129, 2011
Online since
July 2011
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$32.00
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