Relationship of mesh size and wall thickness
Relationship of mesh size and wall thickness
(OP)
Hi! do you have any idea if there is a relationship between the mesh size and wall thickness?
I am designing a reaction wall and strong floor for an actuator and shaking table using etabs. This type of structure requires very thick wall and slab thickness. And do u think that using using "shell" and defining it as "thick plate" would be more appropriate? My reaction wall thickness is 1.7m and strong floor is 1.2m.
Please help. Thank you very much.
I am designing a reaction wall and strong floor for an actuator and shaking table using etabs. This type of structure requires very thick wall and slab thickness. And do u think that using using "shell" and defining it as "thick plate" would be more appropriate? My reaction wall thickness is 1.7m and strong floor is 1.2m.
Please help. Thank you very much.





RE: Relationship of mesh size and wall thickness
TOP
CSWP, BSSE
www.engtran.com www.niswug.org
"Node news is good news."
RE: Relationship of mesh size and wall thickness
RE: Relationship of mesh size and wall thickness
you can test this yourself, reduce the element size ... do the results change significantly ??
RE: Relationship of mesh size and wall thickness
RE: Relationship of mesh size and wall thickness
For a start, if your wall is 7 x 17 meters then assuming 1m square elements would give 119 shell elements to cover the wall. If you used solid hexahedral elements you would need at a minimum 357 elements (3 through the thickness). If you double the mesh density twice you would have 22,848 elements. This is not a bad problem to do in solids even on a modest computer. Using solids would take into account that the point loads were applied on the surface of the wall or floor and not on the neutral axis .5 meter below the surface.
TOP
CSWP, BSSE
www.engtran.com www.niswug.org
"Node news is good news."
RE: Relationship of mesh size and wall thickness
as per SAP tutorial, ideal mesh size is maximum 5 times the thickness or less. and angle must be maximum 135degrees between 2 sides of a mesh
RE: Relationship of mesh size and wall thickness
Gurmeet
Gurmeet
Time is an illusion. Now is the only thing there is.
RE: Relationship of mesh size and wall thickness
Let's see if this helps you:
http://
Best regards,
Blas.
RE: Relationship of mesh size and wall thickness
thank you very much for your help especially to nothing111.
i'll keep you posted to what the results are, currently i am off to a new project, so i have to set it aside until i'm done with the new one.
thanks again