Abstract
The phenomena of the ‘piling up’ and ‘sinking-in’ of surface profiles in conical indentation in elastic-plastic solids with work hardening are studied using dimensional and finite-element analysis. The degree of sinking in and piling up is shown to depend on the ratio of the initial yield strength Y to Young’s modulus E and on the work-hardening exponent n. The widely used procedure proposed by Oliver and Pharr for estimating contact depth is then evaluated systematically. By comparing the contact depth obtained directly from finite-element calculations with that obtained from the initial unloading slope using the Oliver-Pharr procedure, the applicability of the procedure is discussed.
Original language | English |
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Pages (from-to) | 115-120 |
Number of pages | 6 |
Journal | Philosophical Magazine Letters |
Volume | 78 |
Issue number | 2 |
DOIs | |
State | Published - Aug 1998 |
ASJC Scopus subject areas
- Condensed Matter Physics