CFD Online Discussion Forums

CFD Online Discussion Forums (https://www.cfd-online.com/Forums/)
-   ANSYS Meshing & Geometry (https://www.cfd-online.com/Forums/ansys-meshing/)
-   -   [DesignModeler] Macro / Script for automatic geometry import (https://www.cfd-online.com/Forums/ansys-meshing/119269-macro-script-automatic-geometry-import.html)

wasabi June 13, 2013 05:10

Macro / Script for automatic geometry import
 
Hello everybody,

First I want to say that I searched in the forum for something similar but I found nothing, so Im opening this topic.


Im performing an optimization in which the 3rd-party optimizer runs an external software for geometry generation that generates an .igs file, that, imported into DesignModeler, is the starting point for a parametric model, from where starts a complete CFD workflow.

Heres my problem:

this .igs file is already present inside the DesignModeler tree, and, even if it is updated at every optimization step (by optimizer-->geometry generation software), it is not automatically updated in DM (think that even if the file is missing the geometry keeps working, I get only a message saying that the original file is missing...).


So I tried to record a script from Workbench in File-->Scripting-->Start recording journal performing these actions:

Opening DM from geometry block --> go to the Import feature in the tree --> RMB "Edit selections" --> Giving the path of .igs file --> Generate --> exit DM --> save file.

But when I run this script workbench only opens DM and closes it, without doing all the import procedure.


Does somebody have any kind of hint for me?

Thanks in advance, best regards.

PSYMN June 14, 2013 10:13

I don't know what is wrong with DM (why it doesn't try to update), but generally speaking, IGES is a problem.

Each time you generate an IGES file, it generates new surface names without any consistency. It is a difficult starting point for any sort of parametric update.

Just about anything else would be better.

wasabi June 14, 2013 11:24

1 Attachment(s)
First thanks for the answer.

Quote:

Originally Posted by PSYMN (Post 434016)
I don't know what is wrong with DM (why it doesn't try to update)

I even tried "manually" to change the imported file, change in WB a parameter (so he was obliged to refresh the DM component) and then I had a look in DM to see if the imported geometry was changed but it was still the old one. To change it, in the "Import" feature properties i found a feature "Refresh"(Yes/No) that if selected as Yes, gives me the chance to click on Generate and so the new geometry is loaded (please see screenshot attached). But this property has to be set manually every time, the simple Refresh of the DM component do not read the geometry file every time, thats what Im noticing.

By the way, with some help I set up a Python script to command WB operations and a JavaScript script to make DM loading the file, and right now Im performing some tests, but I have to wait for the results (finger crossed!).


Concerning the IGES file, thanks for the hint, I will consider a change of format (will STEP be fine?).

Thanks again!

PSYMN June 14, 2013 14:13

Step and IGES are similarly bad... ACIS, Parasolid, dwg and other formats are better because they persistently name their entities the same way between updates.

vigges June 18, 2013 07:59

wasabi,

would you mind sharing the code for both WB and DM operations? I've reached an dead end and maybe you can get me out of there ;)

thanks,
vigges

wasabi June 20, 2013 05:20

Quote:

Originally Posted by vigges (Post 434633)
wasabi,

would you mind sharing the code for both WB and DM operations? I've reached an dead end and maybe you can get me out of there ;)

thanks,
vigges

I need firts to check if I can, I developed it in a project of the company Im working for.

ICS August 12, 2013 19:12

Im also facing problems importing geometries... I already generate parasolids, but it contains many bodies and when I change the geometry all of them become a separate part... I need to automaticaly form a new part with all the bodies in the geometry... how can I do it using script?

mvoss August 13, 2013 03:45

Regarding the IGES import:
You cannot use the "journaling" for the DM. Wb is Phython, DM is JScript.
BUT: you can send JScript Commands to an DM-Container via the wb-journal.
JScript isnt supported but there is an overview in the documentation.

I was facing a very similar problem with ICEM and a parametric geometry in an EXTRA dm container on the wb-schematic. I solved the not-upto-date-geometry-error by including the standalone geometry container in the appropriate simulation container (CFX, FLUENT, ANSYS, etc.) . Since the geometry AND the whole downstream action (meshing, solving, post) are stuffed in ONE update call everything worked out. There is smth. strange about different containers on the wb-schematic calling the update for containers downstream in the workflow and also vice versa. Reported it to the support ( they gave the idea mentioned above).

Hope this helps..

Matthias

ICS August 13, 2013 06:57

Thanks for your help!

I understand that I cannot use the "journaling" for the DM. But I can call a JScript from the wokbench journal... so what i'm trying to do is:

WB journal:

system1 = GetSystem(Name="FFF")
geometry1 = system1.GetContainer(ComponentName="Geometry")
geometry1.SetFile(FilePath="C:...........x_t")
geometry1.Edit()
script = open('C:...............js', 'r')
geometry1.SendCommand(Command=script.read())

This code changes the .x_t geometry, opens the DM and runs the JScript file... but how would it be the JScript code to select all bodies in the geometry and form a single part?

Kapi April 1, 2014 19:05

Hi ICS,

Quote:

Originally Posted by ICS (Post 445407)
but how would it be the JScript code to select all bodies in the geometry and form a single part?

there are few functions for all these things, you need to go inside codes to find these functions.
Anyway, what you can do is at the end of your "geometry.js" code, add this

var X = agb.FormNewPartFromAllBodies();
X.name = "Y";

this will create single part from all the bodies.
"Y" is th ename you want for the part which includes all bodies

Hope it helps
Cheers
KAPI

ICS April 2, 2014 06:40

Hi Kapi, thanks for your help.

I had already managed a solution, but I forgot to post here... this is how the code became:

system1 = GetSystem(Name="FFF")
geometry1 = system1.GetContainer(ComponentName="Geometry")
geometry1.Edit()
geometry1.SendCommand(Command="""ag.m.NewSession (1);
ag.gui.CreateImport("C:/....x_t");
agb.regen();
ag.gui.PickFilter(5, true);
ag.gui.SelectAll();
ag.m.FormBodyGroup();""")

It opens the DM, create a new session, import the new geometry file, select all bodies and form a new group.

In another thread I discussed a way to update the mesh and export the file: http://www.cfd-online.com/Forums/ans...esh-macro.html

Kapi April 9, 2014 00:27

Hi ICS,
this is alone of the ways to make part from bodies in WBJN file.

Quote:

Originally Posted by ICS (Post 483420)
agb.regen();
ag.gui.PickFilter(5, true);
ag.gui.SelectAll();
ag.m.FormBodyGroup();""")

what I posted above is for JS file where all your geometry code goes!
I checked mesh macro link as well, its good, quiet similar to geometry.

Keep up the good work!

Cheers
KAPI

maw November 18, 2014 13:05

Do you know a method of choosing only a few bodies as opposed to all?

Kapi November 24, 2014 01:07

Hi Maw,

In your JS script you can either do Named selection of bodies and use them how you want or other option is to pick them from top to bottom, something like this

Code:

body1 = ag.fm.Body(ag.fm.BodyCount-1);
and then rename them and use them in your code.

Hope this helps.

Cheers
Kapi

nealrm October 27, 2015 04:53

I also need to some how script the creation of a single part from many bodies. However the differences are that i am currently using a parameterized model in workbench that updates by running a journal file with new parameter values (that change the number of bodies by pattern operation).

How can i make a geometry script that will update the existing geometry in workbench and subsequently form the single part of all bodies?

Kapi December 15, 2015 00:40

Hi Neal,

I think you are after this function

Code:

var Prt1 = agb.FormNewPartFromAllBodies();
Prt1.Name ="Part1";


Cheers
KAPI

Allen Latt August 29, 2016 08:04

:) Hello Everyone,

Just like Wasabi, I aslo have the same problem with you.
I am stuck in this place. I tried to find solution but not find out till now.
here is my workflow.

In Design Modeller in my Ansys workbench workflow, I imported one geometry (in .igs file format) and it means that one geometry is already there and there were some additonal editing steps .

In the other hand, I have a main Journal Script to command Workbench operations in WB GUI.

Now I would like to replace that geometry with another geometry (in .igs file format) in Design Modeller.
Is there any JScript command to replace and load another geometry and refresh the old additional editing steps in DesignModeller?

I would like to put that JScript in main Journal Script. How can I link?

I hope someone has an idea about this.

Best Regards,
Aung Ko Latt



Quote:

Originally Posted by wasabi (Post 434039)
First thanks for the answer.


I even tried "manually" to change the imported file, change in WB a parameter (so he was obliged to refresh the DM component) and then I had a look in DM to see if the imported geometry was changed but it was still the old one. To change it, in the "Import" feature properties i found a feature "Refresh"(Yes/No) that if selected as Yes, gives me the chance to click on Generate and so the new geometry is loaded (please see screenshot attached). But this property has to be set manually every time, the simple Refresh of the DM component do not read the geometry file every time, thats what Im noticing.

By the way, with some help I set up a Python script to command WB operations and a JavaScript script to make DM loading the file, and right now Im performing some tests, but I have to wait for the results (finger crossed!).


Concerning the IGES file, thanks for the hint, I will consider a change of format (will STEP be fine?).

Thanks again!


Kapi August 31, 2016 21:09

as suggested by PSYMN

Quote:

Step and IGES are similarly bad... ACIS, Parasolid, dwg and other formats are better because they persistently name their entities the same way between updates.
so I suggest u to use other format firstly.
Secondly I am not sure if there is any function to replace your geometry file.
You may have to delete the old file and import the new one.

Kapi

elketonis September 2, 2016 11:26

Explode part/import multiple parts w/ NS
 
Hi all,

I'm trying to import a .prt geometry file as multiple parts. They are currently being imported as only 1 part with 3 bodies.

I have identified several possible solutions -
1. I need to explode the imported geometry file in DM
2. Import multiple parts with named selections
3. Form a new part for each of the solid bodies

I have not been able to find a command for 1.

Using the import code:
Code:

...
newGeom = "D:/.....prt"
geometry1.SetFile(FilePath=newGeom)
geometry1.Edit()
geometry1.SendCommand(Command="""ag.m.NewSession (1);
ag.gui.CreateImport("D:\....1.prt");
agb.regen();
ag.gui.CreateImport("D:\....2.prt");
agb.regen();
ag.gui.CreateImport("D:\....3.prt");
agb.regen();""")

Creates imports that are not actual solid geometry since it's originally added as a material. Even when I change these manually to add frozen, none of the normal "import geometry" options are available, such as named selections etc.

I'm not sure how to use the
Code:

body1 = ag.fm.Body(ag.fm.BodyCount-1);
that Kapi posted. How do I call body1 to form a new part? Am completely unfamiliar with OOP and JScript.

Any help is appreciated... This is the last step holding me back from automation.

Kapi September 4, 2016 23:54

you will not be able to "explode" in DM
bring in each geometry separately if u wish!

care to explain more what u want?
Quote:

Creates imports that are not actual solid geometry since it's originally added as a material. Even when I change these manually to add frozen, none of the normal "import geometry" options are available, such as named selections etc.
the code which I posted is used once you have regenerated your geometry as solid body.
Once created you can call the bodies and use functions on them.
What functions do u want to use?


All times are GMT -4. The time now is 17:34.