Integrated BIM tools, including Revit, AutoCAD, and Civil 3D
Professional CAD/CAM tools built on Inventor and AutoCAD
Describe the isolated foundation analytical model and interpret results that are transferred to Robot Structural Analysis Professional.
Type:
Tutorial
Length:
7 min.
Transcript
00:04
The isolated foundation.
00:05
Analytical model contains a single analytical point which access
00:09
a support when transferred to robot structure analysis professional.
00:13
The fixity of the support can then be defined
00:18
the isolated foundation supports can be
00:20
automatically checked against a user defined tolerance
00:23
that checks the structural members position
00:25
relative to the isolated foundations support.
00:29
When linking REV to robot, an isolated foundation becomes a robot support.
00:35
The support is named REV
00:37
BC fixed and by default is fixed in all six degrees of freedom.
00:42
It's also worth noting that a RT
00:44
boundary condition will transfer to robots and become a robot support.
00:48
This will also be mapped at A R
00:50
BC support type.
00:52
You'll notice in the model that we have four simple beams supported
00:55
by four steel columns that are each supported by isolated structural foundations.
01:01
However,
01:02
you'll note that the bottom two foundations
01:04
are offset causing eccentricity within the structure.
01:08
Let's now investigate this in the analytical model
01:11
in the project browser. Go ahead and double click on the analytical model view
01:17
in the analytical model.
01:18
You'll notice that the analytical isolated foundation
01:21
is represented by this gray point.
01:24
You'll notice that we have support under the two columns here.
01:27
But as we said earlier,
01:28
you can see that the supports are offset from the columns causing eccentricity.
01:33
We'll now get rev it to check the supports
01:35
to do this. Go ahead and select the analyzed ribbon
01:39
and on the analyzed ribbon, go ahead and select check member supports.
01:44
Notice that
01:45
it gives a warning and you can see here that in the warning dialogue box,
01:49
it's informing us that the structured element may not be supported.
01:52
Notice that the structured element here is highlighted,
01:55
I can view the next warning by selecting the next warning button
01:59
and you can see it's now highlighted this member here.
02:03
However, in reality, these two columns are supported.
02:06
But as we've said earlier, the foundations are eccentric.
02:10
In this example, we'll change the tolerance that rev it's using
02:14
to do this. Let's go ahead and select the analytical model settings.
02:18
This is found in the analytical model tools panel
02:21
and here we can select analytical model settings
02:26
in the structural settings dialog box.
02:28
You'll note here that we have an area for tolerances.
02:31
Notice here that the support distance is currently set to 1 ft
02:35
here. I'm going to change this and we'll now select 2 ft
02:39
and click. OK?
02:41
We will then get another warning informing us that
02:43
these changes could take some time to complete.
02:46
We'll just go ahead and select close there
02:48
and once again, we'll go up and select check member supports
02:54
in the warnings, dialog box.
02:55
You'll now notice that the member support check is complete.
02:58
No unsupported elements have been detected.
03:02
OK.
03:03
So now that the checks are completing rev it,
03:05
we can now start to have a look at the interaction between rev
03:08
and robot structural analysis professional
03:11
on the analyze ribbon. Go ahead and select robot structure analysis
03:17
in the pull down menu, select robot structure analysis link
03:21
in the integration with robot structural analysis dialogue box.
03:25
The direction of integration is going to be to send the model to robots
03:29
and we'll use a direct integration method.
03:32
Go ahead and select OK.
03:34
Rev it will now send the model to robot structure analysis.
03:44
The information dialogue box allows us to see information that may be present.
03:47
In this case, we'll just click no.
03:49
And you can now see we're in robot structural analysis professional.
03:53
Let's first begin by reviewing the support.
03:56
So if we select a support in robots, you'll now notice that it's using the R
04:01
BC fixed type.
04:03
And again, here we can review this by selecting support
04:06
and in the supports dialog box. If we double click on REV
04:10
BC fixed,
04:11
we can now confirm that all six degrees of freedom are fixed.
04:16
OK. Let's go ahead and click close and close again to the supports dialogue.
04:21
Before we can analyze this structure,
04:23
we need to create a rigid link between the support here and a common base
04:28
to do this. We'll go ahead and set up the geometry menu.
04:32
And then we'll go to additional attributes
04:35
and select rigid links.
04:38
We'll need to create a fixed rigid link to do this.
04:40
We'll select the new rigid link tool
04:43
and here we can type in fixed the label.
04:46
And here I'm going to block all six directions and click add.
04:51
We can then click close to the rigid link dialog box.
04:54
And now we can set our master node and our slave node.
04:58
the master node must be the support and the slave node will be the column base.
05:03
So go ahead and select master node
05:06
and we'll pick the node here
05:08
and then we'll select slave node and pick the column base.
05:12
And in this case,
05:13
you can see that we have node three for master add node seven for the slave node,
05:18
click apply
05:19
and then click close.
05:22
We'll now repeat the same process for the other support on the column base.
05:26
So to do this, we'll go back to the geometry menu
05:29
will go to additional attributes and select rigid links.
05:33
And once again here we'll select master node,
05:36
we'll select the supports
05:38
and then pick slave node and pick the column base.
05:42
And of course click apply
05:43
and close.
05:46
We're now ready to run the calculations
05:49
on the standard toolbar. Go ahead and select calculations.
05:54
You can now set the calculations of run without any errors or warnings
05:59
and will now go to the layout menu
06:01
and choose results.
06:03
And here we'll choose results diagrams.
06:08
Now here, we're simply just interested in the reactions at the supports.
06:12
To view these, we'll select the reactions tab
06:15
and we'll select the reaction in the FZ direction.
06:19
And also the moment in the X direction
06:23
would also view the descriptions and then click apply.
06:26
You can now see that we have the same force
06:28
showing in the Z direction for all four supports.
06:32
But of course, we have a much bigger moment on these areas here with the rigid link.
06:36
So to summarize this, we can take a simple rait
06:39
model, transfer it across to robot,
06:41
add some rigid links to transfer moments
06:44
across and then get accurate analysis results.
Video transcript
00:04
The isolated foundation.
00:05
Analytical model contains a single analytical point which access
00:09
a support when transferred to robot structure analysis professional.
00:13
The fixity of the support can then be defined
00:18
the isolated foundation supports can be
00:20
automatically checked against a user defined tolerance
00:23
that checks the structural members position
00:25
relative to the isolated foundations support.
00:29
When linking REV to robot, an isolated foundation becomes a robot support.
00:35
The support is named REV
00:37
BC fixed and by default is fixed in all six degrees of freedom.
00:42
It's also worth noting that a RT
00:44
boundary condition will transfer to robots and become a robot support.
00:48
This will also be mapped at A R
00:50
BC support type.
00:52
You'll notice in the model that we have four simple beams supported
00:55
by four steel columns that are each supported by isolated structural foundations.
01:01
However,
01:02
you'll note that the bottom two foundations
01:04
are offset causing eccentricity within the structure.
01:08
Let's now investigate this in the analytical model
01:11
in the project browser. Go ahead and double click on the analytical model view
01:17
in the analytical model.
01:18
You'll notice that the analytical isolated foundation
01:21
is represented by this gray point.
01:24
You'll notice that we have support under the two columns here.
01:27
But as we said earlier,
01:28
you can see that the supports are offset from the columns causing eccentricity.
01:33
We'll now get rev it to check the supports
01:35
to do this. Go ahead and select the analyzed ribbon
01:39
and on the analyzed ribbon, go ahead and select check member supports.
01:44
Notice that
01:45
it gives a warning and you can see here that in the warning dialogue box,
01:49
it's informing us that the structured element may not be supported.
01:52
Notice that the structured element here is highlighted,
01:55
I can view the next warning by selecting the next warning button
01:59
and you can see it's now highlighted this member here.
02:03
However, in reality, these two columns are supported.
02:06
But as we've said earlier, the foundations are eccentric.
02:10
In this example, we'll change the tolerance that rev it's using
02:14
to do this. Let's go ahead and select the analytical model settings.
02:18
This is found in the analytical model tools panel
02:21
and here we can select analytical model settings
02:26
in the structural settings dialog box.
02:28
You'll note here that we have an area for tolerances.
02:31
Notice here that the support distance is currently set to 1 ft
02:35
here. I'm going to change this and we'll now select 2 ft
02:39
and click. OK?
02:41
We will then get another warning informing us that
02:43
these changes could take some time to complete.
02:46
We'll just go ahead and select close there
02:48
and once again, we'll go up and select check member supports
02:54
in the warnings, dialog box.
02:55
You'll now notice that the member support check is complete.
02:58
No unsupported elements have been detected.
03:02
OK.
03:03
So now that the checks are completing rev it,
03:05
we can now start to have a look at the interaction between rev
03:08
and robot structural analysis professional
03:11
on the analyze ribbon. Go ahead and select robot structure analysis
03:17
in the pull down menu, select robot structure analysis link
03:21
in the integration with robot structural analysis dialogue box.
03:25
The direction of integration is going to be to send the model to robots
03:29
and we'll use a direct integration method.
03:32
Go ahead and select OK.
03:34
Rev it will now send the model to robot structure analysis.
03:44
The information dialogue box allows us to see information that may be present.
03:47
In this case, we'll just click no.
03:49
And you can now see we're in robot structural analysis professional.
03:53
Let's first begin by reviewing the support.
03:56
So if we select a support in robots, you'll now notice that it's using the R
04:01
BC fixed type.
04:03
And again, here we can review this by selecting support
04:06
and in the supports dialog box. If we double click on REV
04:10
BC fixed,
04:11
we can now confirm that all six degrees of freedom are fixed.
04:16
OK. Let's go ahead and click close and close again to the supports dialogue.
04:21
Before we can analyze this structure,
04:23
we need to create a rigid link between the support here and a common base
04:28
to do this. We'll go ahead and set up the geometry menu.
04:32
And then we'll go to additional attributes
04:35
and select rigid links.
04:38
We'll need to create a fixed rigid link to do this.
04:40
We'll select the new rigid link tool
04:43
and here we can type in fixed the label.
04:46
And here I'm going to block all six directions and click add.
04:51
We can then click close to the rigid link dialog box.
04:54
And now we can set our master node and our slave node.
04:58
the master node must be the support and the slave node will be the column base.
05:03
So go ahead and select master node
05:06
and we'll pick the node here
05:08
and then we'll select slave node and pick the column base.
05:12
And in this case,
05:13
you can see that we have node three for master add node seven for the slave node,
05:18
click apply
05:19
and then click close.
05:22
We'll now repeat the same process for the other support on the column base.
05:26
So to do this, we'll go back to the geometry menu
05:29
will go to additional attributes and select rigid links.
05:33
And once again here we'll select master node,
05:36
we'll select the supports
05:38
and then pick slave node and pick the column base.
05:42
And of course click apply
05:43
and close.
05:46
We're now ready to run the calculations
05:49
on the standard toolbar. Go ahead and select calculations.
05:54
You can now set the calculations of run without any errors or warnings
05:59
and will now go to the layout menu
06:01
and choose results.
06:03
And here we'll choose results diagrams.
06:08
Now here, we're simply just interested in the reactions at the supports.
06:12
To view these, we'll select the reactions tab
06:15
and we'll select the reaction in the FZ direction.
06:19
And also the moment in the X direction
06:23
would also view the descriptions and then click apply.
06:26
You can now see that we have the same force
06:28
showing in the Z direction for all four supports.
06:32
But of course, we have a much bigger moment on these areas here with the rigid link.
06:36
So to summarize this, we can take a simple rait
06:39
model, transfer it across to robot,
06:41
add some rigid links to transfer moments
06:44
across and then get accurate analysis results.
Industry:
Role:
How to buy
Privacy | Do not sell or share my personal information | Cookie preferences | Report noncompliance | Terms of use | Legal | © 2025 Autodesk Inc. All rights reserved
Sign in for the best experience
Save your progress
Get access to courses
Receive personalized recommendations
May we collect and use your data?
Learn more about the Third Party Services we use and our Privacy Statement. May we collect and use your data to tailor your experience?
Explore the benefits of a customized experience by managing your privacy settings for this site or visit our Privacy Statement to learn more about your options.