Yade

How to visualize displacement feild

Asked by weijy

Hi all,

I tried to visualize the displacement field between two stages in triaxial test. It might be achieved by showing arrows starting from the position of a sphere at stage 1, ending at its position at stage 2. It would be better if different colors could be applied on each arrow to indicate the quantity of the displacement vector. Wondering if anyone can offer a smart method, thanks!

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Solved by:
Jan Stránský
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Best Jan Stránský (honzik) said : 		#1

Hello,

e.g. using export.VTKExporter + Paraview:
vtk = export.VTKExporter(...)
vtk.exportSpheres(useRef=True,what=[('dspl','b.state.displ()')])

In paraview:
Glyph, Glyph Type = Arrow, Vectors = dspl, Scale Mode = vector, Scale
Factor = 1
colored by "GlyphVector"

I got arrows from original to current positions, colored according to arrow
length.

cheers
Jan

Revision history for this message
weijy (weijy) said : 		#2

Thank you Jan, that is very helpful. But may I ask how to define the refPos?

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weijy (weijy) said : 		#3

Thanks Jan Stránský, that solved my question.

Revision history for this message
Jan Stránský (honzik) said : 		#4

refPos is set when the body is created (refPos=pos)

in case, you can assign it arbitrary value if wanted/needed:
b.state.refPos=whatever

cheers
Jan

2017-02-24 14:48 GMT+01:00 weijy <email address hidden>:

> Question #478212 on Yade changed:
> https://answers.launchpad.net/yade/+question/478212
>
> Status: Open => Solved
>
> weijy confirmed that the question is solved:
> Thanks Jan Stránský, that solved my question.
>
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