Shell+Solid Mesh
Altair EmployeeHi everyone.
My name is Mirko and i'm working on my final thesis in Aeronautical Engineering at the Politecnico of Milan.
My thesis is about an aeronautical seat and i'll have to use Hypermesh to mesh the parts of the seat in order to use them in FE analysis; unfortunately i'm a new user of Hypermesh and i cannot find tutorials or guide helpfull for my problem.
I have to create the mesh of the 'legs' of my seat, but they are made of thin surfaces and of one solid block at the top; in a first approximation i've neglected the solid part and i generated middle surfaces and meshed them as shell, but now i have to consider also the solid part.
There is a way to create a mixed shell Shell+Solid? Or i'll have to mesh the entire body as Solid?
Thank you very much in advance for your help.
<?xml version="1.0" encoding="UTF-8"?>
Answers
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Hi Mirko1989
I feel seeing your model, you can do shell mesh for the entire part and can assign different thickness for the top portion and bottom portion.
Still if you want to go for 2D and 3D, the best way i think is to give node to node connectivity between shell and solid mesh.
However there are many ways to connect 2D mesh with a 3D. These forum posts will give you an idea.
https://community.altair.com/community?id=community_question&sys_id=b486c83a1b2bd0908017dc61ec4bcb37
https://community.altair.com/community?id=community_question&sys_id=a896007a1b2bd0908017dc61ec4bcbfa0 -
Hello Mirko1989,
As you can see above, there are a lot of possibilities.
We usually solve this by modeling another row of shell elements into the solid.
But be aware, in all what you do, check the result for plausibility. As a rule, such locations are difficult to assess directly at the transition.
Best Regards,
Mario
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Altair Forum User said:
you can do shell mesh for the entire part
The top of this component requires solid mesh, due to high thickness to length ratio:
<?xml version="1.0" encoding="UTF-8"?>
When h/L is large, shear deformation is at its maximum importance and the user should use solid elements. When h/L is small, transverse shear deformation is not important and thin shell elements are the most effective choice.
https://www.linkedin.com/pulse/shells-vs-solids-finite-element-analysis-quick-review-kuusisto-p-e-
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