deflection max orthotropic sandwich
deflection max orthotropic sandwich
(OP)
Hi all,
I ask me how calculate the max deflection of the sandwich plate with skin orthotropic (with a simple expression, please, not with the KL plate theorie).
Methods can i have seen in the hexcel catalog, structure composite daniel gay, the bruhn or other books taking the assumption that the skins are in isotropic material.
My question is.
Can I use these formulas taking the highest young modulus of the orthotropic skin to calculate the max deflection of the plate?
I believe that methods aplication can give a correct approach but considering the plate as a beam with the highest young's modulus in the longitudinal axis.
But i don't sure. i wait your suggestions.
Thanks.
PS:Sorry for the mistakes, i know, i'm unpardonable
I ask me how calculate the max deflection of the sandwich plate with skin orthotropic (with a simple expression, please, not with the KL plate theorie).
Methods can i have seen in the hexcel catalog, structure composite daniel gay, the bruhn or other books taking the assumption that the skins are in isotropic material.
My question is.
Can I use these formulas taking the highest young modulus of the orthotropic skin to calculate the max deflection of the plate?
I believe that methods aplication can give a correct approach but considering the plate as a beam with the highest young's modulus in the longitudinal axis.
But i don't sure. i wait your suggestions.
Thanks.
PS:Sorry for the mistakes, i know, i'm unpardonable






RE: deflection max orthotropic sandwich
However, you also talked about a sandwich plate, which indicates there may be different materials that make up the depth of your bending member. The relative moduli need to be resolved before calculating the deflections.
If you "heard" it on the internet, it's guilty until proven innocent. - DCS
http://www.eng-tips.com/supportus.cfm
RE: deflection max orthotropic sandwich
As you have mentioned there are many differing authors in the field of composites and so the approaches can also differ.
I would recommned using Roark's Formulas for Stress and Strain which will be based on plate theory but will not cover the anisotropic nature of the problem.
To use beam theory I would think the ratio of length to width should be on the order of 2 or higher.
Regards,
![[pipe] pipe](https://www.tipmaster.com/images/pipe.gif)
Qshake
Eng-Tips Forums:Real Solutions for Real Problems Really Quick.
RE: deflection max orthotropic sandwich
I guess the friction in between plates may have some influence on how these plates behave, but I am not positive on that.
RE: deflection max orthotropic sandwich
i think you want to conservatively consider your orthotropic skin as being isotropic by assuming the lower modulus. sounds ok to me.