How can i model tube with lattice structures? 1

[Osman Eroglu]

Dear all,
I have a Abaqus script that repeats a lattice structure in two dimension. I am modeling lattice cells as solids with their wall thickness. And geometry is a plate-like structure with a smaller out of plane thickness compared to other lengths.
However, i want to roll this structure into a tube like geometry. The result I'm trying to achieve is actually a tube with lattice walls. I want to write this Abaqus script parametrically in terms of mesh repetitions and relative density.
If anyone has any ideas on how to do this and can help I'd be very happy.

RG link of the question :

https://www.researchgate.net/post/How_can_i_model_tube_with_lattice_structures

 

[FEA way]

Check the WrapMesh plug-in (available in the DS Knowledge Base article "Abaqus/CAE plug-in to wrap a flat 3D mesh into a cylindrical shape") and wrapMesh() method for Python scripting (described in the documentation chapter "Wrapping a mesh about the Z-axis").

 

[Osman Eroglu]

Thank you for the answer,

it seem very useful. I am working on it, if i get some improvement i will post here.

Thanks

 

[Osman Eroglu]

Hi again,

wrap Mesh() is only works with orphan mesh and mesh should be planar.
However, i have 3D mesh and i couldn't make orphan mesh.

I' m working on wraping the unit cell with circular pattern, but it will not wrap the mesh.
In this case, final geometry will be polygon that has one unit cell in the one face.
Is there a way round the geometry from every mesh nodes.


What I'm trying to do is actually something similar to the fold and unfold command found in the solidworks sheet metal plug-in. In this plugin getting geometries like bellow is possible. Instead of circles i am planning to use kagome lattice.

Thanks for your attention.

 

[NRP99]

You can obtain orphan mesh by writing your geometry attached mesh to .inp file and then reading it again in the CAE using import model.

You can use warpMesh() on only planar geometries. I think you can create the planar Kagome lattice structure and then use wrapMesh() method after writing planar mesh file and reading the orphan mesh into CAE.