Post-yield characterisation of metals with significant pile-up through spherical indentations
Finite element simulations of spherical indentations accounting for frictional contact provide validated load-indentation output for assessing and improving existing methods used to determine the stress-strain curve of materials with significant pile-up. The importance of friction to the proper asse...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
2006.
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| Subjects: | |
| Online Access: | Get fulltext |
| LEADER | 01281 am a22001453u 4500 | ||
|---|---|---|---|
| 001 | 28968 | ||
| 042 | |a dc | ||
| 100 | 1 | 0 | |a Habbab, H. |e author |
| 700 | 1 | 0 | |a Mellor, B.G. |e author |
| 700 | 1 | 0 | |a Syngellakis, S. |e author |
| 245 | 0 | 0 | |a Post-yield characterisation of metals with significant pile-up through spherical indentations |
| 260 | |c 2006. | ||
| 856 | |z Get fulltext |u https://eprints.soton.ac.uk/28968/1/Habb_06.pdf | ||
| 520 | |a Finite element simulations of spherical indentations accounting for frictional contact provide validated load-indentation output for assessing and improving existing methods used to determine the stress-strain curve of materials with significant pile-up. The importance of friction to the proper assessment of the pile-up effect is established. Weaknesses in current characterisation relations and procedures are also identified. Existing correction formulae accounting for pile-up are modified so that the contact area radius is more accurately determined. This modification is implemented in the context of a characterisation process that relies on analysing unloading portions of load-indentation curves. Post-yield material behaviour predictions from such analysis are found to be in very good agreement with the initial finite element material input. | ||
| 655 | 7 | |a Article | |