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Helical Materialorientation for Solids

Hello,

i have a tube with 4 layers of CHEXA Elements in a cylindrical coordinate system. I would like to have the material orientation of some layers in 45 degree and some others in -45 degree. So the material orientation shall be like a Helix.

How can i do that? Is there a way to do that, without creating coordinate systems and Properties for each element?

If not, is there a script for that?

Thank you very much.

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Altair Forum User

Hi,

I am not into scripting but, my idea for your case would be to have several local systems and assign them to the elements at each step.

Altair Forum User

In case you are using Optistruct as a solver, try MAT9ORT in conjunction with PSOLID. Assign both to each layer separately. MAT9ORT provides Input for orthotropic SOLID-Elements. Via PSOLID you can define a material orientation system to each layer individually.

I am not exactly sure, but it could be worth a try: Define one cylindrical system for each layer, place it on the tubes centre axis and rotate the system 45°/-45° about its tangential vector. That should ensure the desired orientation for the layers.

tinh

Hello,

i have a tube with 4 layers of CHEXA Elements in a cylindrical coordinate system. I would like to have the material orientation of some layers in 45 degree and some others in -45 degree. So the material orientation shall be like a Helix.

How can i do that? Is there a way to do that, without creating coordinate systems and Properties for each element?

If not, is there a script for that?

Thank you very much.

You can create one system for each element

or you can create one system for all elements but each element different degree

in both case I think you should write a tcl script to do that unless your model has few elements