& Construction
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Integrated BIM tools, including Revit, AutoCAD, and Civil 3D
& Manufacturing
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Professional CAD/CAM tools built on Inventor and AutoCAD
Integrated BIM tools, including Revit, AutoCAD, and Civil 3D
Professional CAD/CAM tools built on Inventor and AutoCAD
Transcript
00:02
In this lesson we'll set up a simulation study.
00:06
After completing this lesson you'll be able to set up a simulation study,
00:10
verify loads and constraints and generate a mesh.
00:15
In Fusion 360 we're going to take a look at our generative motorcycle frame design.
00:19
It's important to note that when we export a design from a generative study,
00:24
it also contains additional information about the simulation.
00:27
So from here we're going to navigate to the simulation workspace and note that we're prompted.
00:35
It says it looks like a design was created with generative design, do you want to use the setup information.
00:41
So we want to do a "yes", because we want to bring in all of the loads and constraints
00:45
and information that we spent time creating and populating in our generative study.
00:50
From here we're now in a simulation study and you can see that study 1 has study materials.
00:57
This is going to be the only material that was exported with the design
01:01
and then we have our static, our torsions and our breaking.
01:05
It also takes a look at contact sets if there are multiple bodies,
01:09
but in the case of a generative design, we're only looking at a single body.
01:13
And then we also have our mesh which hasn't been generated yet end results.
01:18
To get started we're going to calculate the mesh
01:21
and we're going to do this by right clicking on the mesh, and we're going to select "generate mesh."
01:28
This is going to use all the default settings for a static stress simulation study.
01:33
And at this point we want to make sure that the mesh elements best represent the design
01:38
to make sure that we get some accurate results.
01:41
For designs that come out of generative, they typically will have small pipes or tubes.
01:46
And we need to make sure that our mesh elements are either adaptive with that
01:49
or that they're small enough to take into account those interactions.
01:54
Generally, when you solve a static stress simulation study it'll automatically solve the mesh for us.
01:60
But because it is a critical step I want to make sure that we explore the mesh first before we solve a simulation study.
02:11
Once the mesh elements are created if there are any problems, you'll note that we have some errors on the screen.
02:17
There are some self-intersections. You can see here that we've got self-intersections in two separate areas.
02:23
So these are important to consider and they might require us to do some additional troubleshooting on this model.
02:29
As we rotate it around you can see that there is a small area here where the mesh is not able to solve,
02:35
because of this we need to make adjustments to the model.
02:39
This can be done in simplify, but in our case we're going to go back to the design workspace,
02:44
we're going to modify the form body. So we'll go to that organic form feature in the timeline,
02:51
we'll right click and we'll select "edit".
02:60
From here we need to take care of this small pinch region.
03:03
So we're going to go to our modification tools and we want to select "the erase and fill" option.
03:12
With the erase and fill we can select a small grouping of faces.
03:16
Make sure that we get them all. You can see there's an extra face in here
03:20
and then we can use either the reduce star or fill star method and then select "okay."
03:26
Now, in some cases it might be hard to see what that underlying geometry is in the smooth display mode.
03:31
So we might need to change the display mode in order to accurately see what we're working with.
03:38
Note that we get a warning in this case telling us that to apply this change
03:42
it's going to affect one or more of the frozen regions.
03:45
We're going to select "unfreeze" and notice that it automatically goes into this box display mode.
03:51
This is telling us that there is an error or an issue with it
03:54
and the first thing that I want to do is go to utilities and select "repair body".
03:60
We're going to select the body and we're going to use auto repair.
04:04
This will automatically go through the body and try to find any free edges or star points.
04:08
And you can see here displayed in red that this point here is going to present an issue.
04:15
I'm going to use the auto repair option and allow it to try to fix all of these issues.
04:21
Once auto repair is complete and it was able to fix those star points
04:25
you can see that we now have a smooth display back.
04:28
So this is telling me that everything was fixed properly, but there are a few more things that we might want to do.
04:34
So I'm going to select "modify" and go down to smooth.
04:39
I want to try to smooth out this region, selecting just a few of these faces.
04:47
And then I want to use the slider and go up about halfway and allow it to try to generate a smooth result.
04:53
It looks pretty good and if we go up a little bit more let it smooth out a little bit more.
04:59
You can see that it's starting to adjust some of the external faces and I'm going to say, "okay."
05:06
Let's rotate this around and make sure that we don't also have a problem on the other side of these faces.
05:10
So we've got a few holes that go through, but ultimately everything else looks pretty good there.
05:17
So I'm going to finish the form, allow it to regenerate the solid body,
05:20
and move my way back into the simulation workspace.
05:26
From here before we go into simulation, let's make a quick save to make sure that we don't lose any of the work.
05:31
And then we can navigate to the simulation workspace.
05:38
Because we had already started a simulation study,
05:41
it might tell us that our results are out of date if we've done anything past creating that mesh.
05:47
But since our mesh failed in this case we don't really have to worry about anything being out of date.
05:52
We will want to regenerate the mesh and make sure that it no longer has that problem.
05:57
So again I'll right click, select "generate mesh" and allow it to create the new mesh for us.
06:02
Hopefully, we eliminated the problem, but if any other problems come up we will need to go back into edit model
06:07
and make some more adjustments.
06:10
Now, you can see that we have an actual mesh result.
06:13
We don't have any more errors and it was able to mesh the entire body without problems.
06:18
So this tells me that we have a good solution. We have large mesh elements where we can
06:23
and smaller adaptive ones based on the default settings in the simulation study.
06:28
You'll note that the study is ready to solve, but from here again I always like to make sure I save often.
06:35
Let's go ahead and make sure that we save this design before moving on to the next lesson.
Video transcript
00:02
In this lesson we'll set up a simulation study.
00:06
After completing this lesson you'll be able to set up a simulation study,
00:10
verify loads and constraints and generate a mesh.
00:15
In Fusion 360 we're going to take a look at our generative motorcycle frame design.
00:19
It's important to note that when we export a design from a generative study,
00:24
it also contains additional information about the simulation.
00:27
So from here we're going to navigate to the simulation workspace and note that we're prompted.
00:35
It says it looks like a design was created with generative design, do you want to use the setup information.
00:41
So we want to do a "yes", because we want to bring in all of the loads and constraints
00:45
and information that we spent time creating and populating in our generative study.
00:50
From here we're now in a simulation study and you can see that study 1 has study materials.
00:57
This is going to be the only material that was exported with the design
01:01
and then we have our static, our torsions and our breaking.
01:05
It also takes a look at contact sets if there are multiple bodies,
01:09
but in the case of a generative design, we're only looking at a single body.
01:13
And then we also have our mesh which hasn't been generated yet end results.
01:18
To get started we're going to calculate the mesh
01:21
and we're going to do this by right clicking on the mesh, and we're going to select "generate mesh."
01:28
This is going to use all the default settings for a static stress simulation study.
01:33
And at this point we want to make sure that the mesh elements best represent the design
01:38
to make sure that we get some accurate results.
01:41
For designs that come out of generative, they typically will have small pipes or tubes.
01:46
And we need to make sure that our mesh elements are either adaptive with that
01:49
or that they're small enough to take into account those interactions.
01:54
Generally, when you solve a static stress simulation study it'll automatically solve the mesh for us.
01:60
But because it is a critical step I want to make sure that we explore the mesh first before we solve a simulation study.
02:11
Once the mesh elements are created if there are any problems, you'll note that we have some errors on the screen.
02:17
There are some self-intersections. You can see here that we've got self-intersections in two separate areas.
02:23
So these are important to consider and they might require us to do some additional troubleshooting on this model.
02:29
As we rotate it around you can see that there is a small area here where the mesh is not able to solve,
02:35
because of this we need to make adjustments to the model.
02:39
This can be done in simplify, but in our case we're going to go back to the design workspace,
02:44
we're going to modify the form body. So we'll go to that organic form feature in the timeline,
02:51
we'll right click and we'll select "edit".
02:60
From here we need to take care of this small pinch region.
03:03
So we're going to go to our modification tools and we want to select "the erase and fill" option.
03:12
With the erase and fill we can select a small grouping of faces.
03:16
Make sure that we get them all. You can see there's an extra face in here
03:20
and then we can use either the reduce star or fill star method and then select "okay."
03:26
Now, in some cases it might be hard to see what that underlying geometry is in the smooth display mode.
03:31
So we might need to change the display mode in order to accurately see what we're working with.
03:38
Note that we get a warning in this case telling us that to apply this change
03:42
it's going to affect one or more of the frozen regions.
03:45
We're going to select "unfreeze" and notice that it automatically goes into this box display mode.
03:51
This is telling us that there is an error or an issue with it
03:54
and the first thing that I want to do is go to utilities and select "repair body".
03:60
We're going to select the body and we're going to use auto repair.
04:04
This will automatically go through the body and try to find any free edges or star points.
04:08
And you can see here displayed in red that this point here is going to present an issue.
04:15
I'm going to use the auto repair option and allow it to try to fix all of these issues.
04:21
Once auto repair is complete and it was able to fix those star points
04:25
you can see that we now have a smooth display back.
04:28
So this is telling me that everything was fixed properly, but there are a few more things that we might want to do.
04:34
So I'm going to select "modify" and go down to smooth.
04:39
I want to try to smooth out this region, selecting just a few of these faces.
04:47
And then I want to use the slider and go up about halfway and allow it to try to generate a smooth result.
04:53
It looks pretty good and if we go up a little bit more let it smooth out a little bit more.
04:59
You can see that it's starting to adjust some of the external faces and I'm going to say, "okay."
05:06
Let's rotate this around and make sure that we don't also have a problem on the other side of these faces.
05:10
So we've got a few holes that go through, but ultimately everything else looks pretty good there.
05:17
So I'm going to finish the form, allow it to regenerate the solid body,
05:20
and move my way back into the simulation workspace.
05:26
From here before we go into simulation, let's make a quick save to make sure that we don't lose any of the work.
05:31
And then we can navigate to the simulation workspace.
05:38
Because we had already started a simulation study,
05:41
it might tell us that our results are out of date if we've done anything past creating that mesh.
05:47
But since our mesh failed in this case we don't really have to worry about anything being out of date.
05:52
We will want to regenerate the mesh and make sure that it no longer has that problem.
05:57
So again I'll right click, select "generate mesh" and allow it to create the new mesh for us.
06:02
Hopefully, we eliminated the problem, but if any other problems come up we will need to go back into edit model
06:07
and make some more adjustments.
06:10
Now, you can see that we have an actual mesh result.
06:13
We don't have any more errors and it was able to mesh the entire body without problems.
06:18
So this tells me that we have a good solution. We have large mesh elements where we can
06:23
and smaller adaptive ones based on the default settings in the simulation study.
06:28
You'll note that the study is ready to solve, but from here again I always like to make sure I save often.
06:35
Let's go ahead and make sure that we save this design before moving on to the next lesson.
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