Hi Shriram.
I think that you can use a mesh variable over the time (two meshes in your case)
See Help on 'GiD Customization-Postprocess data files-Re-meshing and adaptivity
In the postprocess mesh file you could define two named groups, e.g. ‘Original’ and ‘Deformated’ (with the original mesh, and the one with the large displacement)
and then define the results for this groups with the ‘OnGroup’ flag (with relative displacements, without add the first displacement)
Each resuls has associated its time step, and will use its own mesh (associated by its group)
Note: the interest of this new Group concept is that you can define both meshes repeating nodes and elements number (e.g. the first node of Original and Deformated could start by 1)
*.post.msh
Group Original
MESH “mesh_name” dimension …
…
End elements
End Group
Group Deformated
MESH “mesh_name” dimension …
…
End elements
End Group
*.post.res
OnGroup Original
Result “Displacement” “analysis” 0.25 vector OnNodes
…
End Values
…
End Ongroup
OnGroup Deformated
Result “Displacement” “analysis” 0.40 vector OnNodes
…
End values
…
End Ongroup
Enrique
----- Original Message -----
From: Shriram
To: gidlist at listas.cimne.upc.edu
Sent: Wednesday, September 22, 2010 3:15 PM
Subject: Re: [GiDlist] Animation for Small Deformation
Hi Anna,
Thanks for the reply.
Actually, I realized it is part of a bigger problem that I am struggling with. I have been trying to get a proper solution but haven’t yet. Any assistance would be really helpful.
Actually my analysis happens in two parts. For e.g. first there is a large deformation of the body (no deformation factor is needed in the result) and then there is a thermal shrinkage/expansion on the same body after the large deformation. So there are two .post.res file with two sets of displacements.
Since GiD by default calculates the deformation based on the original mesh - for the second analysis, I actually print out the total displacement w.r.t original geometry. So, it is the large deformation displacement + the small shrinkage. Now this causes the problem that I cannot use a deformation factor just for viewing the small shrinkage because GiD applies the deformation to the total displacement and plots are weird.
How can I solve this problem? Is there a way that I can write an ascii mesh which can be used as reference for the small displacement instead of having to use the original mesh information?
Thanks for your support,
From: gidlist-bounces at listas.cimne.upc.edu [mailto:gidlist-bounces at listas.cimne.upc.edu] On Behalf Of Anna Monros
Sent: Tuesday, September 21, 2010 11:42 AM
To: gidlist at listas.cimne.upc.edu
Subject: Re: [GiDlist] Animation for Small Deformation
Dear Shriram,
I don’t understand exactly what you mean.
Your analysis has only one step or several steps?
If you have several steps, when you choose a deformation factor and you perform an animation you should see each step deformed with that factor.
Best regards,
El 17/09/2010 22:01, Shriram escribió:
Hi,
I have a small deformation analysis (thermal shrinkage/expansion) over time. So I have results for the displacements over time. But since it’s a thermal problem the deformation is really small, I use a deformation factor to see the deformation.
I want to animate the deformation with the factor. The animation doesn’t do that. It deforms with the factor in the animation but the animation is without any factor.
Is there a way to achieve animation with deformation factor?
Thanks,
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