Abstract
Spherical indentation has the potential for measuring the elastic-plastic properties of a power-law hardening bulk specimen with just one simple test. In this paper, based on a new definition of representative strain, a set of dimensionless functions that relate the indentation characteristics and material properties are established by means of extensive finite element analyses. A new numerical algorithm of reverse analysis is proposed to extract the elastic-plastic properties of bulk materials from one indentation test. This method is applicable to a wide range of power-law hardening materials. Good agreement is found between the material properties obtained from the reverse analysis of the new approach and experimental data.
| Original language | English |
|---|---|
| Pages (from-to) | 23-32 |
| Number of pages | 10 |
| Journal | Acta Materialia |
| Volume | 54 |
| Issue number | 1 |
| Early online date | 30 Sept 2005 |
| DOIs | |
| Publication status | Published - Jan 2006 |
| Externally published | Yes |
Funding
The work is supported in part by NSF CMS-0407743, and in part by the Department of Civil Engineering and Engineering Mechanics, Columbia University.
Keywords
- Finite element analysis
- Microindentation
- Plastic deformation