Timeline for Modeling orthotropic materials with isotropic assumption
Current License: CC BY-SA 4.0
8 events
| when toggle format | what | by | license | comment | |
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| May 28, 2018 at 20:22 | comment | added | Biswajit Banerjee | @user27504: Engineering StackExchange will be a better fit for that question. The guess is typically based on experiments on similar materials and sometimes micromechanics. But in my experience people just pick numbers out of the hat. I believe that's because practitioners often don't know much mechanics beyond undergraduate strength of materials. Also, composite specialists tend not to trust numerics and rely more on hands-on trial and error. Though a lot of testing is done, it's typically tensile testing or three-point bend tests which are insufficient for fully characterizing anisotropy. | |
| May 28, 2018 at 4:44 | comment | added | nicoguaro♦ | @user27504, yes, please start a new question. | |
| May 28, 2018 at 2:36 | comment | added | user27504 | Ah interesting, maybe I should start a new thread on this, but not sure if it would fit in the scicomp question. What would their guess be based on though? Transversely isotropic is still a lot better for full anisotropic. I wonder how people do it for full anisotropic mateirals | |
| May 27, 2018 at 23:36 | comment | added | Biswajit Banerjee | @user27504: "how computational people obtain the full stiffness coefficient matrix ...". They guess. It's extremely difficult to experimentally measure these quantities (particularly Poisson's ratios) even for transversely isotropic materials. | |
| May 27, 2018 at 19:33 | comment | added | nicoguaro♦ | @user27504, I don't have a definite answer to this. But I think that question is better asked separately. | |
| May 27, 2018 at 19:24 | comment | added | user27504 | Ah yes. Do you know how computational people obtain the full stiffness coefficient matrix for a fully anisotropic material? I'm assuming they usually get something from experiments? | |
| May 27, 2018 at 18:34 | vote | accept | user27504 | ||
| May 27, 2018 at 17:51 | history | answered | nicoguaro♦ | CC BY-SA 4.0 |