VTK Stress Linearization Implementation

About the development of the FEM module/workbench.

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KgoaOT
Posts: 66
Joined: Mon Jul 18, 2016 9:08 am

Re: VTK Stress Linearization Implementation

Postby KgoaOT » Fri Dec 02, 2016 12:25 pm

ickby wrote: 1. In the "plot data over line" filter you can only use a line. Why did you remove the posibility to choose an arbitrary curve like it was in your first implementation?
In the first implementation a vtkcylinder with a small radius was used to approximate a line. The problem was that this particular cylinder was dependent on the mesh quality (this is the same issue with the sphere) and in directions that did not have enough nodes, it was not able to clip data.

After reviewing the Paraview implementation of the "Data along Line filter", then it was decided to use the vtkprobefilter and vtklinesource to interpolate the results along a user defined line.
ickby wrote: 2. I can't select the line points and can't see them in the 3d plot. I would imagine if oyu implement it as before and as it is done with plane/sphere surfaces you can also make lines easily moveable
The reason the "Select Points" button was added was to make it easier for the user to select the points on the geometry with which the line is to drawn.
ickby wrote: 5. I'm able to choose the visualisation "surface" etc., which does not make sense for lines?
I'm thinking that a way around this is to use a default display mode that displays a line and the user does not have an option to change this?
KgoaOT
Posts: 66
Joined: Mon Jul 18, 2016 9:08 am

Re: VTK Stress Linearization Implementation

Postby KgoaOT » Fri Dec 02, 2016 12:35 pm

here is the latest branch with all the updated changes:
https://github.com/makkemal/FreeCAD/tre ... edStressV3

- Start FreeCAD
- Change to StartWB
- Load 3D FEM example
- Activate analysis
-Select results and create new post processing pipeline
-Create a DataAlongLine filter
-Select 2 points that define line/define points manually
-Click apply to update display with 3D line
-Select surface with edges for display mode
-Select field
-Click on Create plot
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makkemal
Posts: 395
Joined: Wed Apr 29, 2015 12:41 pm
Location: South Africa
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Re: VTK Stress Linearization Implementation

Postby makkemal » Sat Dec 03, 2016 2:46 pm

Can you guys start testing we are satisfied with how it works now.
This allows you to do pressure vessel design according to ASME and EN codes and standards.
A big step for getting users onboard
UR_
Posts: 1345
Joined: Tue Jan 03, 2017 8:42 pm

Re: VTK Stress Linearization Implementation

Postby UR_ » Sun Jul 09, 2017 1:29 pm

makkemal wrote: Sat Dec 03, 2016 2:46 pm Can you guys start testing we are satisfied with how it works now.
Hello makkemal,
Christop from german forum gots stuck trying data plotting on win 10. :(

Have you any information according this? :roll:

EDIT: Sorry, forgotten to post link. :oops:
https://forum.freecadweb.org/viewtopic. ... 91#p181589