Material-independent Solution For The Distributions Of Stress And Plastic Strain On The Neck Section
Price
Free (open access)
Transaction
Volume
43
Pages
10
Published
2003
Size
463.08 kb
Paper DOI
10.2495/MC030081
Copyright
WIT Press
Author(s)
G. Mirone
Abstract
The stress and strain distributions across the necked section of tensile specimens is needed for a real stress-strain characterization of ductile materials in the highly deformed phase of their life The better method currently available to evaluate the above distributions comes from Bridgman [I], which gives material curves affected by an error ranging from 3% to more than 10%. Furthermore, the application of this method requires a considerable amount of work in measuring the curvature radii of the necking profile at different stages of each tensile test. In this paper a new material-independent model for the solut~on of the necking problem is presented, based on the matching of experimental observations and numerical analyses.. The stress and strain distributions on the neck are derived accor
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