Peculiarities of use of the method of visioplasticity to determine the stress state of porous semifinished products

Authors
Sakharov, DV Sivak, IO Pokras, VD Ivatsko, VT
Citation
Dv. Sakharov et al., Peculiarities of use of the method of visioplasticity to determine the stress state of porous semifinished products, POWD MET ME, 39(3-4), 2000, pp. 122-130
Citations number
7
Categorie Soggetti
Metallurgy
Journal title
POWDER METALLURGY AND METAL CERAMICS
ISSN journal
10681302 → ACNP
Volume
39
Issue
3-4
Year of publication
2000
Pages
122 - 130
Database
ISI
SICI code
1068-1302(200003/04)39:3-4<122:POUOTM>2.0.ZU;2-A
Abstract
An experimental-computational method is developed to study the stress state of a material on the basis of its experimental kinematic diagram by using the techniques of visioplasticity. The method of R-functions and the method of stress functions are used in calculating the stress state. Volumetric p lastic deformation is also taken into account. The stress field for the ini tial (nonsteady) stage of extrusion of an axisymmetric porous semifinished product is obtained.