DISTRIBUTION OF PLASTIC STRAIN AND NEGATIVE-PRESSURE IN NECKED STEEL AND COPPER BARS Academic Article

abstract

• The distributions of plastic strain and negative pressure (hydrostatic tensile stress) have been computed both by an approximate method based on an extension of the Bridgman development and by a finite element analysis in inhomogeneously deforming bars after necking. The computations have been made for both initially smooth bars as well as bars having machined initial natural neck profiles, for two types of stress-strain behavior, modelling a spheroidized 1045 steel and a fully aged Cu-0.5 pct Cr alloy. The results of the finite element analysis show that the approximate method based on an extension of the Bridgman development is good only for slightly necked bars. In more acutely necked bars the Bridgman development is good only near the center of the neck. Some experimental results on strain distribution and on neck profiles are also presented. 1975 American Society for Metals, The Melallurgical Society of AIME.

authors

• Needleman, Alan

published proceedings

• METALLURGICAL TRANSACTIONS

author list (cited authors)

• ARGON, A. S., IM, J., & NEEDLEMAN, A.

citation count

• 110

complete list of authors

• ARGON, AS||IM, J||NEEDLEMAN, A

publication date

• April 1975

publisher

• Springer Nature  Publisher

keywords

• 40 Engineering
• 4014 Manufacturing Engineering

Digital Object Identifier (DOI)

• 10.1007/BF02672305

start page

• 815

end page

• 824

volume

• A 6

issue

• 4

URL

• http%3A%2F%2Fdx.doi.org%2F10.1007%2Fbf02672305