Showing papers by "Shiro Kobayashi published in 1970"
80 citations
TL;DR: In this paper, an elastoplastic analysis of plane-strain and axisymmetric flat punch indentation into a specimen of finite dimensions was made by the finite element method, using an improved finite-element representation.
68 citations
TL;DR: In this article, two solutions for the detailed mechanics of tube extrusion are presented, one based on the theoretical velocity field, and the other on the flow field observed experimentally.
Abstract: Two solutions for the detailed mechanics of tube extrusion are presented. One is based on the theoretical velocity field, and the other on the flow field observed experimentally. The theoretical solution makes use of admissible velocity fields containing no velocity discontinuities. Experimental flow patterns are obtained for commercially pure lead and a superplastic alloy of the eutectic of lead and tin. The two solutions are compared in terms of velocity components, grid distortions, and strain and stress distributions, and very good agreement between the two solutions is revealed.
19 citations