orthotropic materia

[shevablue]

Hi,
how can i set the orthotropic characteristics of the wood in the material properties?

i've two elastic modulus:

parallel to the wood fibers : 10 GPa
perpendicular to the wood fibers : 0.8 GPa

I will procede as follow:

in young modulus field i will enter: 10e9
to introduce the different characteristics i will flag the rotate elasticity tensor field, and set
unit vector 1 : 0.08 (if x is the direction perpendicular to the fiber)
unit vector 2 : 1 (if y is the direction of the fiber)
unit vector 3 : 0.08 (if z is the direction perpendicular to the fiber)

is this procedure corrrect?

thanks for your help

[shevablue]

i've tried and it gives me back error "unknown value unit vector".

Where i'm wrong?

[uwe]

Hi,

you can give the Youngs Modulus as a 6x6 Matrix.

Code: Select all

Youngs modulus(6,6) =  2500   -33    -600     0      0     0 \ 
 -33    61.6   -27     0      0     0 \
 -600   -27    1430     0      0     0 \
 0     0       0  1590      0     0 \
 0     0       0     0  27000     0 \
 0     0       0     0      0  1290 

I'm not sure if you have to give the stiffness or compliance matrix.

Greeting,
Uwe