Imported Ply Thickness after free-sizing not correct

Altair Forum User

Hello,

 

I've run a free-sizing optimization on a formula student monocoque. I set some parameters for the core material, for it to be max 12.5mm and in steps of 2.5 mm manufacturibility.

When I have a look at the xxx_des.h3d I can see that the thickness of the core in some areas is 12.5mm (my model is in meters). 

 

However, when I import this model into a new model (with import-solver deck), the thickness of the core plies are not even close to 12.5mm in total. What is causing this behaviour?

I attached 2 pictures to clarify.

 

Thank you in advance

Alex

<?xml version="1.0" encoding="UTF-8"?>

<?xml version="1.0" encoding="UTF-8"?>

Altair Forum User

Hi @nodroz

 

Is it possible to share the base file with us?

Please use the file transfer link in my signature to share the model file

Altair Forum User

I transfered the files using the link in your profile. Thank you in advance!

 

Altair Forum User

I send you some other files on my latest optimization model. I included the free-sizing model, the h3d, xx_sizing model and the imported result. 

Altair Forum User

Hi @Nodroz

 

Thank you for sharing the files. I will get back to you soon. 

Altair Forum User

Hi @nodroz

 

Sorry for a late reply.

 

Since the laminate is symmetry, you need to multiply the thickness by 2. 

 

Can you check the same?

Altair Forum User

The sum of the 4 plies from my core is 0.005

Multiplied by 2 makes it 0.010

 

But in the h3d file I can see that the maximum ply thickness of my core material is 0.012 

Altair Forum User

Altair Forum User said:

But in the h3d file I can see that the maximum ply thickness of my core material is 0.012 

@nodroz

 

OK, maybe I was looking at wrong plies, let me get back to you on this, 

Altair Forum User

Hi,

 

I will check with the development team and will get back to you soon,