- [Instructor] At this point in the analysis,
we need to add some loads to the design.
So let's go ahead over here to Evaluate,
click on Simulation Express.
Now, every time we do close or open the document,
it does kick us out of that wizard,
so we have to launch it every single time.
Go ahead and click on that.
So you can see on the left, we do have a few other fixtures
we've already added from the last movie,
and now we're going to be adding external loads.
Go ahead and click on Next, notice we're
in the Fixtures tab, we've already done that.
So click on Next again.
Now we're in the Loads tab.
So I can either a force or a pressure.
Here's my two options down here.
So force will be applied on a face or an edge,
something like that, a pressure would be applied
to an entire surface, and in this case here,
pressure doesn't make a lot of sense.
Unless you have like a tank or a tube,
or something like that you're filling with water
or pressure or air, that's where you'd probably
use pressure, but in this case, here,
I want to apply a force.
Click on Force, and I'm going to apply it to this surface,
inside of here, this tapered hole.
That's where we're going to be mounting to.
And I also have a flange that's going to kind of push down
on the top there, and it's going to kind of surround this
area right here, so I can choose this top surface here.
But you can see what happens,
it chooses the entire surface, and really,
I'm not pushing down on the entire surface there,
just the area kind of right around
where this thing's mounted to.
So I need to make a couple modifications to the design,
to show where I'm going to be actually applying the force,
and it's clearly not over the entire surface,
like shown here, so let's go ahead and exit out of this.
So click on Cancel.
Let's go ahead and exit out of the wizard.
Go ahead and save the data.
Now let's go ahead and make a few small modifications.
Lets choose this top surface here,
start a sketch, use a circle,
and I'm going to go ahead and spin it normal to us.
I'm looking straight down on it.
And just drag out a circle here.
Let's go ahead and add a dimension
of that circle, place it out here.
Make sure you're grabbing the circle itself.
And then 1.25 is our diameter.
And that's what we want to have.
Now, a couple options here.
One is we can go over here to this Analysis Preparation
toolbar and I can split the surface
or use a split line to break that surface.
And that's a really good way to do it.
The other thing you could do is make an extrude
or an extrude cut just a few thousandths into the material
so you end up with a different surface.
But the better way to do it is using split line.
Go ahead and click on that one right there.
I'm going to go ahead and project that split line,
the current sketch, onto that surface right there,
click on OK, and now I've split the surface and there it is.
So I now can choose this surface here
and that surface in there to apply my force to.
Now I have the exact same thing done
to these holes over here on the side,
and that's where our fixture was being applied.
I really want to bolt this thing the wall
using four washers and four bolts,
and that's where I'm going to be holding it,
by those bolts or those washers.
So that's why I've added this split line right here.
I'm going to go ahead and roll this forward,
slide it up there, you can see that's where the washers
are going to be pushing on or holding this in place.
And we're going to probably go back later
and change the way we're holding this model
and change the fixture to being applied
around these surfaces here, and then our load
applied in these areas, here.
So let's jump back into the Evaluate toolbar,
go over here to Simulation Express,
click on Next and go over here to Loads.
Let's go ahead and apply a force.
This time, I can apply that force on that surface,
right there, and that surface inside of there.
And let's go ahead and make sure
that all the forces are going in the right direction.
So over here, the top surface is great.
But when you get inside the hole,
you can see those arrows are actually pushing outwards,
and that's not what we want.
So let's go ahead and change the way it's being applied.
Click on Selected Direction,
and as far as the direction, I want to choose
using one of the fundamental planes.
Go over here and click on, if you just zoom out a little bit
you can see which one you're choosing,
the top plane here, and notice as soon as I do that,
all those arrows start pointing upwards,
but we really want them to go the other direction,
so let's go ahead and click on Reverse Direction,
so now you can see it's going down into the hole,
which looks pretty good, and as far as your units,
I want to use inches, or pounds, so we're going to use
the inch/pound/second system.
So go ahead and choose that, and then choose the force.
So in this case, here, I'm going to say 1,000 pounds,
pushing downwards, inside that hole,
there it is, down, and then click on OK.
Now I can spin my model around and you can see there
that I've got all those little arrows applying the force
around just that one little ring right there,
and inside there, and that's exactly what we want.
Over here, we have some fixtures applied to the back
surface here, as well as the inside of those holes,
holding that on the wall, ready to go.
Now we're probably going to modify it later
and change it so it's actually pushing
where these washers might be,
but for right now, we've applied a fixture,
we've applied a load, and now we've got to review
the material, and we'll be ready to run our simulation.