How to define an Orthotropic plate

[rimple_sandhu]

Hello guys:

I am a newbie to Elmer and I am trying to model an aircraft wing using the linear plate solver. The wing (a cantilever beam) is orthotropic and has E_1, E_2, G, mu parameters given for it. However, I am unable to assign those values as the plate solver allows for to assign only E_1 and mu values and not the whole youngs modulus matrix like the linear elasticity solver. Please help.

-Rimple

[rimple_sandhu]

Any help?

[annier]

Hi rimple,
In the smitc solver, http://www.nic.funet.fi/pub/sci/physics ... #chapter.8, the elasticity tensors (C_{ij}) are defined on the basis of E and nu.
Please refer to Eqs. 8.15, 8.16 and 8.17.
Since it was defined for a perforated plate, the material has only one modulus of Elasticity (E) and there is the formulation of parameters a,b. If your material has E_{i} varying, you can do the trick by defining the values of a,b so that the C_{ij} values are correlated with your E_i values. Or, you can modify the Smitc solver to not use a,b and instead define C_{ij} as input parameters from solver input file. This is like creating modified Smitc solver and compiling it with elmerf90 wrapper tool.


Yours Sincerely,
Anil Kunwar