& 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
00:03
In this tutorial, you generate a 2D mesh in a 2D zone with previously defined 2D boundaries.
00:12
An important part of this process is understanding the validation process and the mesh log.
00:18
To begin, open the 2D River Model network and 2D Ground Model on the GeoPlan.
00:26
With the 2D boundaries defined and set up, you can mesh the 2D zone.
00:31
On the GeoPlan Tools toolbar, click the Select tool, and then select the 2D zone on the GeoPlan.
00:40
From the Model menu, select Meshing, and then select Mesh 2D Zones.
00:46
In the Mesh 2D Zones dialog, you could select external files, layers, or polygons to be used as voids, break lines, or walls within the mesh,
00:57
but for this tutorial, keep all three of these options set to None.
01:03
From the Database, drag the 2D Ground Model into the Mesh 2D Zones dialog and drop it into the Ground Model group box.
01:12
Click OK to mesh the 2D zone.
01:15
Note that this process is similar to running a simulation.
01:20
Click OK to create the job.
01:22
For each mesh job, immediately prior to generation of the mesh, the data used for creating the mesh is validated.
01:31
If there are any errors in the data, meshing does not take place.
01:36
The mesh log for the job contains any error messages, and it is necessary to correct these errors before the mesh can be generated.
01:45
It is possible to generate multiple meshes at the same time for different 2D zones.
01:52
If you make any changes to the objects within your 2D zone,
01:56
a new mesh will need to be generated for the changes to take effect and to simulate that version of the model.
02:04
From the Window menu, select Job control window to display the status of the mesh job and some information on the generation.
02:13
Once the 2D mesh is generated, its row in the Job Control window turns green.
02:20
In the Status column, click Mesh ready to open the Manage mesh results dialog.
02:27
With 2D Zone selected, click Show log to view details for the mesh, including any warnings,
02:34
the minimum triangle area and the number of triangles and elements.
02:40
Errors may be generated if mesh zones or roughness zones overlap.
02:45
Errors also occur if all vertices of a mesh element lie within an undefined area of the ground model,
02:52
which means that the ground level of the element cannot be determined.
02:57
If there are warnings, the mesh is created and the mesh log contains output from the meshing process and any validation warnings.
03:07
Warnings may be generated if polygon boundaries or walls intersect each other.
03:12
In order to resolve these warnings, edit the geometry of objects
03:17
using the polygon and polyline editing tools to snap and insert vertices.
03:23
Click Load Mesh, and then click Close.
03:27
The mesh job is automatically removed from the Job control window and the 2D mesh is loaded into the model.
03:35
Zoom into an area of the GeoPlan to see the 2D elements that are now generated.
03:41
The mesh may be easier to view if you remove the ground model by selecting Network > Clear ground model.
03:49
Using the Select tool, double-click an area of the 2D zone.
03:54
A Multiple Selection popup appears.
03:57
Select the [element: ID] item, and then click OK.
04:02
A new popup provides the information for the selected element.
04:06
The ground level for a mesh element is calculated by sampling the ground model within the 2D triangles that make up the element,
04:14
and then taking the average of the sample point levels.
04:18
This is used to calculate a single elevation for each element.
04:23
When you are finished viewing the information, click Close.
04:27
Click the Validate tool to make sure there are no errors in your network, and then click OK.
04:34
Finally, click Commit changes to database to save your changes.
04:39
Add a comment, such as “2D mesh created”, and then click OK.
Video transcript
00:03
In this tutorial, you generate a 2D mesh in a 2D zone with previously defined 2D boundaries.
00:12
An important part of this process is understanding the validation process and the mesh log.
00:18
To begin, open the 2D River Model network and 2D Ground Model on the GeoPlan.
00:26
With the 2D boundaries defined and set up, you can mesh the 2D zone.
00:31
On the GeoPlan Tools toolbar, click the Select tool, and then select the 2D zone on the GeoPlan.
00:40
From the Model menu, select Meshing, and then select Mesh 2D Zones.
00:46
In the Mesh 2D Zones dialog, you could select external files, layers, or polygons to be used as voids, break lines, or walls within the mesh,
00:57
but for this tutorial, keep all three of these options set to None.
01:03
From the Database, drag the 2D Ground Model into the Mesh 2D Zones dialog and drop it into the Ground Model group box.
01:12
Click OK to mesh the 2D zone.
01:15
Note that this process is similar to running a simulation.
01:20
Click OK to create the job.
01:22
For each mesh job, immediately prior to generation of the mesh, the data used for creating the mesh is validated.
01:31
If there are any errors in the data, meshing does not take place.
01:36
The mesh log for the job contains any error messages, and it is necessary to correct these errors before the mesh can be generated.
01:45
It is possible to generate multiple meshes at the same time for different 2D zones.
01:52
If you make any changes to the objects within your 2D zone,
01:56
a new mesh will need to be generated for the changes to take effect and to simulate that version of the model.
02:04
From the Window menu, select Job control window to display the status of the mesh job and some information on the generation.
02:13
Once the 2D mesh is generated, its row in the Job Control window turns green.
02:20
In the Status column, click Mesh ready to open the Manage mesh results dialog.
02:27
With 2D Zone selected, click Show log to view details for the mesh, including any warnings,
02:34
the minimum triangle area and the number of triangles and elements.
02:40
Errors may be generated if mesh zones or roughness zones overlap.
02:45
Errors also occur if all vertices of a mesh element lie within an undefined area of the ground model,
02:52
which means that the ground level of the element cannot be determined.
02:57
If there are warnings, the mesh is created and the mesh log contains output from the meshing process and any validation warnings.
03:07
Warnings may be generated if polygon boundaries or walls intersect each other.
03:12
In order to resolve these warnings, edit the geometry of objects
03:17
using the polygon and polyline editing tools to snap and insert vertices.
03:23
Click Load Mesh, and then click Close.
03:27
The mesh job is automatically removed from the Job control window and the 2D mesh is loaded into the model.
03:35
Zoom into an area of the GeoPlan to see the 2D elements that are now generated.
03:41
The mesh may be easier to view if you remove the ground model by selecting Network > Clear ground model.
03:49
Using the Select tool, double-click an area of the 2D zone.
03:54
A Multiple Selection popup appears.
03:57
Select the [element: ID] item, and then click OK.
04:02
A new popup provides the information for the selected element.
04:06
The ground level for a mesh element is calculated by sampling the ground model within the 2D triangles that make up the element,
04:14
and then taking the average of the sample point levels.
04:18
This is used to calculate a single elevation for each element.
04:23
When you are finished viewing the information, click Close.
04:27
Click the Validate tool to make sure there are no errors in your network, and then click OK.
04:34
Finally, click Commit changes to database to save your changes.
04:39
Add a comment, such as “2D mesh created”, and then click OK.
In this tutorial, a 2D mesh is generated in a 2D zone with previously defined 2D boundaries. An important part of this process is understanding the validation process and the mesh log.
With the 2D boundaries defined and set up, the 2D zone can be meshed.
In the Mesh 2D Zones dialog, external files, layers, or polygons could be selected for use as voids, break lines, or walls within the mesh, but for this tutorial, keep all three of these options set to None.
Note that this process is similar to running a simulation.
Prior to mesh generation, the data used for creating the mesh is validated. The mesh log for the job contains any error messages, which must be corrected before the mesh can be generated.
It is possible to generate multiple meshes at the same time for different 2D zones. If any changes are made to objects within the 2D zone, a new mesh must be generated for changes to take effect and to simulate that version of the model.
This displays the status of the mesh job. Once the 2D mesh is generated, the row turns green.
Errors may be generated if:
If there are warnings:
The mesh job is automatically removed from the Job control window and the 2D mesh is loaded into the model.
Information for the selected element appears. The ground level for a mesh element is calculated by sampling the ground model within the 2D triangles that make up the element, and then taking the average of the sample point levels. This is used to calculate a single elevation for each element.
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