Timeline for Determination of the domain of nonlinearity in a Neo-Hook solid model (Finite elements)
Current License: CC BY-SA 4.0
9 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 1, 2023 at 8:53 | vote | accept | Zed | ||
| Jun 1, 2023 at 0:16 | answer | added | Zed | timeline score: 0 | |
| May 29, 2023 at 3:25 | answer | added | NNN | timeline score: 2 | |
| May 28, 2023 at 14:48 | comment | added | nicoguaro♦ | @NNN, would you expand your comment into an answer? | |
| May 27, 2023 at 18:29 | history | edited | Anton Menshov♦ | CC BY-SA 4.0 |
deleted 9 characters in body
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| May 26, 2023 at 12:31 | comment | added | NNN | Your $\lambda_{11}$ is close to one. Which means it is close to linear elastic and hence you are seeing a linear response. Make $\lambda_{11}$ much bigger - say 1.2, or 2 or 5 or 10. Then see what you get. Also, you might try plotting the stress-strain curve without using FEM. Try deriving a (non-linear) equation for the stress-strain curve and solve it using fsolve or something equivalent. | |
| May 25, 2023 at 20:42 | comment | added | RandomElasticity | It looks like you’re still in the linear region, just to understand better, how are you running this model? Also maybe plotting stress $(\mathbf{\frac{\partial W}{\partial E}})$ and strain $(\mathbf{E})$ components directly might help in seeing where the nonlinearity is really present in the material model. | |
| S May 25, 2023 at 15:50 | review | First questions | |||
| May 27, 2023 at 18:29 | |||||
| S May 25, 2023 at 15:50 | history | asked | Zed | CC BY-SA 4.0 |