interpolation strain tensor field

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BLP 2018-10-11

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评论： BLP 2018-10-12

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 2018-10-11

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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 2018-10-12

编辑：Nicola Bombace 2018-10-12

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 :)

BLP 2018-10-12

Thanks again. The problem is - its not me who is conducting the numerical simulatio. I am trying to use the results as a refernce for a physical model. Therefore, I do not know much about how it is done in Abaqus. But I will forward you suggestions to a colleague of mine.

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