interpolation strain tensor field
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I have a 3D+t strain tensor field (3D over time) delivered by FAM software (Abaqus). What I need is to interpolate the strain tensor on a fixed plane to gest a 2D tensor maps over time. Can I use the intrep3 function for that interpolating each component of a tensor? Is there any better solution for this problem. I have read that it is better to interpolate eigenvalues and eigenvectors but I did not found details about how to do this
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Nicola Bombace
le 11 Oct 2018
You can interpolate the strain components easily with the interp3 function, and the method linear.
Is it an elastic material? If so you could reconstruct the strain tensor by interpolating only the displacement and using the shape functions...
Which kind of elements are you using?
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Nicola Bombace
le 12 Oct 2018
Modifié(e) : Nicola Bombace
le 12 Oct 2018
If I understand correctly you are using Abaqus Explicit. In this case, you should really use C3D8R, for possible volumetric locking of the elements. Using this element would give you three advantages:
- Robust simulation, because of no locking.
- Smaller Computational time, because of the reduced integration
- You can get the strain directly from the integration point of the element (is an output of Abaqus), and this integration point is in the centre of the hexahedron.
Ps You are really welcome, I hope all this information helps :)
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