Any referenced datasets can be downloaded from "Module downloads" in the module overview.
Transcript
00:02
Define generative loads and constraints.
00:06
After completing this video, you'll be able to
00:08
define generative loads and define generative constraints
00:14
in fusion. We want to carry on with our data set from the previous video.
00:17
But if you had any difficulty,
00:18
you can upload the supply data set gen design loads constraints dot F 3D.
00:23
We're going to take a look at applying
00:25
loads and constraints to our generative study.
00:27
We don't need to see our starting shape or our obstacles.
00:30
We only need to focus our attention on the preserved geometry included.
00:35
So the first thing that we need to do is talk
00:37
about setting up our design conditions or our loads and constraints.
00:41
We're gonna begin by first setting up our structural constraints
00:44
under the type option. We have fixed pin, frictionless and remote.
00:49
There are going to be use cases for all of these,
00:51
but our first stop is going to be our pin constraint.
00:54
We're gonna use our pin constraint as the diameter
00:57
of the four bolt locations for this design.
01:00
Now keep in mind when we take a look at pin constraints,
01:03
we want to think about the locations that we're using them.
01:06
If we happen to lock all three directions of the pin constraint.
01:09
We're essentially fixing those faces on our selection.
01:13
What we're gonna do is allow it to move in the axial direction,
01:16
which is what a bolt would do in preventing these faces from moving.
01:20
We're gonna select, OK.
01:21
And we need to still fix this in space.
01:24
So under our design constraints, we're gonna go to our structural constraint
01:27
and we're gonna select the top face
01:31
and we're gonna use a fixed constraint in only the
01:33
Z direction the Z direction is up for us.
01:36
And what this allows us to do is take a
01:38
look at a bolt holding down these four mounting locations,
01:42
the diameter of the bolt is gonna prevent
01:44
the four holes from moving in either direction
01:46
and the underside or the head of the bolt
01:48
is gonna prevent the faces from moving vertically.
01:51
Well, it's not required that we set it up exactly in this way,
01:54
this is gonna be an accurate representation of
01:57
how this bracket is gonna be bolted down.
01:59
Now that we have our constraints set up.
02:02
The next thing that we need to do is take a look at our loads,
02:05
setting up.
02:06
Our loads can be fairly straightforward,
02:07
but there are several different types of loads.
02:10
In those cases, we're going to be taking a look at either a force or a bearing load.
02:14
And because we have a cylindrical pin
02:17
inside of this bracket, we're gonna be using the bearing load option.
02:21
The bearing load allows us to place a
02:23
parabolic distributed load on the cylindrical face.
02:27
We're gonna rotate this around, move this dialogue out of the way
02:30
and note that we have arrows pointing vertically.
02:33
These arrows are going to represent the load direction
02:35
now because we are using a bearing load.
02:37
This means that only the top half of the cylindrical face in the direction of the load
02:42
is going to be experiencing anything at all.
02:44
As we get closer to the side faces,
02:46
there'll be a reduced load and the max amount of load will be
02:50
located at the top center based on the direction of the load.
02:54
When we need to apply a magnitude,
02:56
we're going to be using the unit system of our generative design.
02:59
And by default, this is going to be set up as custom,
03:02
but we can set this as metric or imperial or we can even change the units on the fly.
03:08
If we want to use newtons as our units, we can enter 2224.
03:13
If instead you want to change the units on the fly,
03:16
we can use the change units option,
03:18
set it to another unit system. And in this case, you can see that's about £500 force.
03:24
We can set this at 500
03:25
once again, either of those options will be fine.
03:28
If you want to configure the units for your generative design study,
03:32
you can use the unit's custom option.
03:34
We can come up here and either select metric or us or use the custom unit system
03:39
and make sure that we modify these values for whichever ones we want.
03:44
The next thing that we do now that we have a single load case is we can repeat
03:48
the process by creating additional load cases by right
03:51
clicking on our study and adding a new load case
03:54
or we can right click on our load case and clone it.
03:57
When we clone a load case, we want to activate our new load case,
04:01
expand our loads
04:03
and modify our bearing load.
04:05
In this case, the magnitude is going to be the same.
04:07
But now we want to rotate at 45 degrees.
04:11
We can also manually enter 45 degrees
04:14
but note that we're pushing this load away from our bracket.
04:17
And we can say, OK,
04:19
once again, we conclude the low case,
04:22
we can activate the new load case, expand our loads and modify our bearing load.
04:27
This time, we're gonna rotate it to a degree of 90.
04:31
We can continue to do this for every load case that we need to account for.
04:35
In our design.
04:36
For our example, we're only gonna be using three load cases
04:40
every time we have additional load cases.
04:42
The generative design study will solve for those
04:44
simultaneously for each manufacturing method and material that
04:48
we pick when we're setting up our materials
04:50
and we're setting up our design criteria.
04:52
So we're gonna limit these to three load cases for our example.
04:55
But if you wish to explore more,
04:57
then you can clone the load cases and have them point in different directions
05:01
for us. Let's go ahead and make sure that we save this.
05:04
And then we're gonna take a look at our generate and precheck.
05:08
The precheck is a great way to know if you
05:10
have all the required information to solve a generative study.
05:14
We still need to define a few more things for ours.
05:16
But notice that it's set up as orange.
05:19
Now, orange means that we can generate outcomes.
05:21
But there are some potential issues.
05:23
If we want more information, we can left,
05:25
click on the precheck and we can see that
05:27
we've got some bodies and components are hidden,
05:29
which in this case, it's not gonna affect anything.
05:32
But it simply includes that warning in case we
05:34
forgot to select some preserved obstacle or starting geometry.
05:38
There's also another warning here about the milling head diameter.
05:41
Now, we haven't gotten to setting up our manufacturing methods yet.
05:44
So we'll talk about that in just a bit.
05:46
But once we make sure that everything is saved,
05:48
we can go ahead and move on to the next step.
00:02
Define generative loads and constraints.
00:06
After completing this video, you'll be able to
00:08
define generative loads and define generative constraints
00:14
in fusion. We want to carry on with our data set from the previous video.
00:17
But if you had any difficulty,
00:18
you can upload the supply data set gen design loads constraints dot F 3D.
00:23
We're going to take a look at applying
00:25
loads and constraints to our generative study.
00:27
We don't need to see our starting shape or our obstacles.
00:30
We only need to focus our attention on the preserved geometry included.
00:35
So the first thing that we need to do is talk
00:37
about setting up our design conditions or our loads and constraints.
00:41
We're gonna begin by first setting up our structural constraints
00:44
under the type option. We have fixed pin, frictionless and remote.
00:49
There are going to be use cases for all of these,
00:51
but our first stop is going to be our pin constraint.
00:54
We're gonna use our pin constraint as the diameter
00:57
of the four bolt locations for this design.
01:00
Now keep in mind when we take a look at pin constraints,
01:03
we want to think about the locations that we're using them.
01:06
If we happen to lock all three directions of the pin constraint.
01:09
We're essentially fixing those faces on our selection.
01:13
What we're gonna do is allow it to move in the axial direction,
01:16
which is what a bolt would do in preventing these faces from moving.
01:20
We're gonna select, OK.
01:21
And we need to still fix this in space.
01:24
So under our design constraints, we're gonna go to our structural constraint
01:27
and we're gonna select the top face
01:31
and we're gonna use a fixed constraint in only the
01:33
Z direction the Z direction is up for us.
01:36
And what this allows us to do is take a
01:38
look at a bolt holding down these four mounting locations,
01:42
the diameter of the bolt is gonna prevent
01:44
the four holes from moving in either direction
01:46
and the underside or the head of the bolt
01:48
is gonna prevent the faces from moving vertically.
01:51
Well, it's not required that we set it up exactly in this way,
01:54
this is gonna be an accurate representation of
01:57
how this bracket is gonna be bolted down.
01:59
Now that we have our constraints set up.
02:02
The next thing that we need to do is take a look at our loads,
02:05
setting up.
02:06
Our loads can be fairly straightforward,
02:07
but there are several different types of loads.
02:10
In those cases, we're going to be taking a look at either a force or a bearing load.
02:14
And because we have a cylindrical pin
02:17
inside of this bracket, we're gonna be using the bearing load option.
02:21
The bearing load allows us to place a
02:23
parabolic distributed load on the cylindrical face.
02:27
We're gonna rotate this around, move this dialogue out of the way
02:30
and note that we have arrows pointing vertically.
02:33
These arrows are going to represent the load direction
02:35
now because we are using a bearing load.
02:37
This means that only the top half of the cylindrical face in the direction of the load
02:42
is going to be experiencing anything at all.
02:44
As we get closer to the side faces,
02:46
there'll be a reduced load and the max amount of load will be
02:50
located at the top center based on the direction of the load.
02:54
When we need to apply a magnitude,
02:56
we're going to be using the unit system of our generative design.
02:59
And by default, this is going to be set up as custom,
03:02
but we can set this as metric or imperial or we can even change the units on the fly.
03:08
If we want to use newtons as our units, we can enter 2224.
03:13
If instead you want to change the units on the fly,
03:16
we can use the change units option,
03:18
set it to another unit system. And in this case, you can see that's about £500 force.
03:24
We can set this at 500
03:25
once again, either of those options will be fine.
03:28
If you want to configure the units for your generative design study,
03:32
you can use the unit's custom option.
03:34
We can come up here and either select metric or us or use the custom unit system
03:39
and make sure that we modify these values for whichever ones we want.
03:44
The next thing that we do now that we have a single load case is we can repeat
03:48
the process by creating additional load cases by right
03:51
clicking on our study and adding a new load case
03:54
or we can right click on our load case and clone it.
03:57
When we clone a load case, we want to activate our new load case,
04:01
expand our loads
04:03
and modify our bearing load.
04:05
In this case, the magnitude is going to be the same.
04:07
But now we want to rotate at 45 degrees.
04:11
We can also manually enter 45 degrees
04:14
but note that we're pushing this load away from our bracket.
04:17
And we can say, OK,
04:19
once again, we conclude the low case,
04:22
we can activate the new load case, expand our loads and modify our bearing load.
04:27
This time, we're gonna rotate it to a degree of 90.
04:31
We can continue to do this for every load case that we need to account for.
04:35
In our design.
04:36
For our example, we're only gonna be using three load cases
04:40
every time we have additional load cases.
04:42
The generative design study will solve for those
04:44
simultaneously for each manufacturing method and material that
04:48
we pick when we're setting up our materials
04:50
and we're setting up our design criteria.
04:52
So we're gonna limit these to three load cases for our example.
04:55
But if you wish to explore more,
04:57
then you can clone the load cases and have them point in different directions
05:01
for us. Let's go ahead and make sure that we save this.
05:04
And then we're gonna take a look at our generate and precheck.
05:08
The precheck is a great way to know if you
05:10
have all the required information to solve a generative study.
05:14
We still need to define a few more things for ours.
05:16
But notice that it's set up as orange.
05:19
Now, orange means that we can generate outcomes.
05:21
But there are some potential issues.
05:23
If we want more information, we can left,
05:25
click on the precheck and we can see that
05:27
we've got some bodies and components are hidden,
05:29
which in this case, it's not gonna affect anything.
05:32
But it simply includes that warning in case we
05:34
forgot to select some preserved obstacle or starting geometry.
05:38
There's also another warning here about the milling head diameter.
05:41
Now, we haven't gotten to setting up our manufacturing methods yet.
05:44
So we'll talk about that in just a bit.
05:46
But once we make sure that everything is saved,
05:48
we can go ahead and move on to the next step.
After completing this video, you’ll be able to:
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