| Numéro |
J. Phys. IV France
Volume 11, Numéro PR4, Septembre 2001
4th European Mechanics of Materials Conference on Processes, Microstructures and Mechanical Properties
|
|
|---|---|---|
| Page(s) | Pr4-339 - Pr4-347 | |
| DOI | https://doi.org/10.1051/jp4:2001441 | |
4th European Mechanics of Materials Conference on Processes, Microstructures and Mechanical Properties
J. Phys. IV France 11 (2001) Pr4-339-Pr4-347
DOI: 10.1051/jp4:2001441
Department of Mechanical Engineering, Solid Mechanics, Technical University of Denmark, 2800 Lyngby, Denmark
© EDP Sciences 2001
J. Phys. IV France 11 (2001) Pr4-339-Pr4-347
DOI: 10.1051/jp4:2001441
Shear band instabilities in compacted metal powder with or without interparticle cohesion
V. Tvergaard and P. RedanzDepartment of Mechanical Engineering, Solid Mechanics, Technical University of Denmark, 2800 Lyngby, Denmark
Abstract
A simple model for analysis of shear band development in uniformly strained solids is used to study the possibility of flow localization during metal powder compaction. Earlier analyses for a metal powder with full interparticle cohesion have predicted no localization. Here, a material model is used, in which the value of a cohesion factor is used to represent either cohesionless powder or powder with a certain amount of cohesion. It is found that localization under compaction depends strongly on the cohesion factor, the stress state, and the magnitude of an initial imperfection.
© EDP Sciences 2001