Timeline for Shear modulus with plastic deformation
Current License: CC BY-SA 4.0
11 events
| when toggle format | what | by | license | comment | |
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| Aug 14, 2021 at 17:46 | comment | added | Frank | Let us continue this discussion in chat. | |
| Aug 14, 2021 at 16:02 | history | edited | Chemomechanics | CC BY-SA 4.0 |
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| Aug 14, 2021 at 15:44 | comment | added | Chemomechanics |
springback inelasticity and springback modulus are probably good search terms to apply in Google Scholar or Web of Science in this context, as exemplified by this paper and this paper.
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| Aug 14, 2021 at 15:38 | comment | added | Chemomechanics | For example this paper investigates ~1% changes in Poisson's ratio when plastically deforming steel. I've ignored such changes in my answer. | |
| Aug 14, 2021 at 15:38 | comment | added | Chemomechanics | Broadly, many material textbooks will have a plot like this or this that superficially indicates Young's modulus as unchanging after plastic deformation. That may be enough for your proof. Otherwise, I'd look for research articles on the actual changes during plastic deformation (that I've assumed to be negligible above) and consider their magnitude. | |
| Aug 14, 2021 at 12:03 | comment | added | Frank | Is there any further literature available on this? I'm looking for references to prove that the physical parameters before and after the deformation can be assumed to be unchanged. Many thanks! | |
| Aug 13, 2021 at 18:39 | vote | accept | Frank | ||
| Aug 13, 2021 at 17:53 | comment | added | Chemomechanics | Yes, typically. Yes, the Poisson ratio doesn't really change either as long as the crystalline lattice resembles the original lattice. | |
| Aug 13, 2021 at 17:44 | comment | added | Frank | I.e. before and after plasticization, the shear modulus is identical, but while plasticization is taking place, is the value assumed to be zero? | |
| Aug 13, 2021 at 17:43 | comment | added | Frank | Many thanks for the answer!!! In the second paragraph I can understand that, from a static point of view, the shear modulus remains unchanged due to the lattice bonds before and after plasticization (does that also apply to the Poisson ratio?). I don't quite understand the first paragraph (During plastic deformation, the shear modulus G is typically assumed to be zero). How does this fit together with the previous knowledge. Do you mean the dynamic process while plasticizing is taking place? | |
| Aug 13, 2021 at 17:13 | history | answered | Chemomechanics | CC BY-SA 4.0 |
