Abstract
This chapter presents an innovative numerical and experimental methodology for determining the stress-strain curve of metallic materials from the measurements of force and displacement obtained in the upsetting of cylindrical test specimens, which takes into account the influence of friction at the contact interfaces with the die platens.
The methodology is based on minimizing the error between the average surface pressure obtained from the experimental measurements of the force and displacement and that obtained from the slab method of analysis of metal plasticity. The computer implementation of the proposed methodology is discussed and a source code written in MATLAB is provided for those readers interested in determining the stress-strain curves of metallic materials.
The accuracy and reliability of the methodology and associated computer implementation is assessed by comparing the stress-strain curves obtained from cylindrical and Rastegaev upset test specimens with different lubricants and from compression tests without friction.
The methodology is based on minimizing the error between the average surface pressure obtained from the experimental measurements of the force and displacement and that obtained from the slab method of analysis of metal plasticity. The computer implementation of the proposed methodology is discussed and a source code written in MATLAB is provided for those readers interested in determining the stress-strain curves of metallic materials.
The accuracy and reliability of the methodology and associated computer implementation is assessed by comparing the stress-strain curves obtained from cylindrical and Rastegaev upset test specimens with different lubricants and from compression tests without friction.
| Original language | English |
|---|---|
| Title of host publication | Manufacturing Engineering Education |
| Editors | J. Paulo Davim |
| Number of pages | 20 |
| Publisher | Elsevier |
| Publication date | 2019 |
| Pages | 85-104 |
| Chapter | 4 |
| ISBN (Electronic) | 978-0-08-101247-5 |
| DOIs | |
| Publication status | Published - 2019 |