Question about enforcing plane strain or plane stress conditions on 3D solid elements.
Question about enforcing plane strain or plane stress conditions on 3D solid elements.
(OP)
Hi all,
I have a quick question regarding enforcing plane strain/plane stress conditions on 3D solid elements, e.g. hexahedrals or brick elements.
Lets say I only have a single layer of 3D solid elements in the z-direction.
There are no tractions applied in the z-direction.
The thickness of the elements is an arbitrary value. It may either be quite relatively large or not.
If I constrain movement of all nodes in the z-direction -> This creates a plane strain condition (check).
If all nodes are free to move in z-direction, and provided that I only have a single row of 3d elements, do I then achieve a plane stress condition regardless of thickness? Why and why not?
I have a quick question regarding enforcing plane strain/plane stress conditions on 3D solid elements, e.g. hexahedrals or brick elements.
Lets say I only have a single layer of 3D solid elements in the z-direction.
There are no tractions applied in the z-direction.
The thickness of the elements is an arbitrary value. It may either be quite relatively large or not.
If I constrain movement of all nodes in the z-direction -> This creates a plane strain condition (check).
If all nodes are free to move in z-direction, and provided that I only have a single row of 3d elements, do I then achieve a plane stress condition regardless of thickness? Why and why not?
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RE: Question about enforcing plane strain or plane stress conditions on 3D solid elements.
RE: Question about enforcing plane strain or plane stress conditions on 3D solid elements.
A follow up question. Would plane stress still be achieved naturally if I use quadratic brick elements or is it only the case for linear brick elements?
I can easily wrap my head around the plane strain, but for some reason, I can't do the same for the plane stress. Is the argument simply that the faces on z-direction are traction free?
RE: Question about enforcing plane strain or plane stress conditions on 3D solid elements.
plane strain implies 3D stress, typically in thick sections where stress can develop in the thickness direction.
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