- [Instructor] Now continuing from the previous video,
we're going to run the analysis for the mesh created
from the sheet metal body.
So we run the study under the stress one results.
We edit the definition, change to x at the top, check OK.
I come into plot tools, probe,
pick any element in the center.
The value is 1,250 PSI, which is correct, so click OK.
Under stress one, edit the definition again.
Let's choose bending, check OK,
and we can see clearly that everything is a computed zero.
So there are no bending stresses in this particular example.
Now the shell elements in this case are aligned
with the loading and the reaction points,
so there's no virtual offsets, so there's no spherus bending
occurring due to in-plane loading.
I mentioned in a previous video we're going to investigate
the application of the loads and the constraints
a little bit more using sheet metal bodies.
When we were dealing with surfaces from geometry,
with offsets, we had to mesh on a specific surface,
and the loads and constraints also had to be applied
to that surface.
There were some strict rules on that.
So for sheet models, there is no surface as such,
so what are the rules?
Right mouse click on the first fixture, edit the definition.
Let's clear this selection and instead choose the top edge.
Check OK, run the study, and we're looking at bending
stresses at the moment, which is zero.
Let's just edit the definition and just look at the top
surface, extractional stresses.
Now we come to plot tools, probe.
We have the correct value 1,250.
So that constraint hasn't made any difference.
Let's change the constraint again,
and again to clear this selection.
Another possibility is to pick this face, so let's try that.
Still the same constraints set up, but now applied
to this face, check OK, and let's run the analysis again.
And the results are identical.
We can pick the top edge, bottom edge, or the face
for the constraint, and it makes no difference.
They're all associated to this surface mesh we've created.
Let's look at one last variation.
If you remember, we couldn't use the normal direction
when using an edge for loading, when we were meshing
and constraining and loading on a surface directly.
So let's edit our loading, edit the definition.
Now at the moment, we're applying a load to this edge.
Again, we can clear that, and just revolving around,
what I could try is loading this front face,
and we check OK.
That has accepted the loading, let's run the analysis.
Again, we can see we have identical results.
Let's come back to this loading.
So edit the definition, we couldn't apply a normal load
to the edge previously.
Now we have a face, what happens if we pick that face,
and we want to apply 1,000 pound force?
That needs the verse direction, it's driving out,
away from the normal.
So it's accepted this, let's check OK,
and run the analysis again.
And we get exactly the same result again.
So it is very convenient, because we can use the edge face,
if we're using a sheet body simulation.
Either the top edge, the bottom edge, or the face
are associated with either loads or vander conditions,
and for loads then we can apply a normal load to that face.
So in this video, we've seen the implication of using
shell elements created from sheet metal bodies.
The thickness of the sheet metal is recognized
by the simulation, the mesh is created on the mid-surface
of the body, no element offsets are used.
Loads and constraints can be applied to any of the edges
or faces associated with the sheet metal body.
I will save this off.
File, save as, I'm gonna call this sheet plate end,
and we want to save the results.