Hello 潘梁柱,

On 4/22/23 05:04, 潘梁柱 wrote:

I have got the vtk file, which contains cauchy-strain, after runing 'sfepy-run sf.py'in command line. But I want to get the strain at the point (0, 0),(0.5, 0.5). And it will be better if i can export a data file that contains strain with its corresponding coordinates.

Try something like

vu = pb.get_variables()['u'] vu.evaluate_at(nm.array([[0, 0], [0.5, 0.5]]), mode='cauchy_strain')

in your postproc().

And i have a question, why the cauchy-strain is a scalar in the vtk file, isn't a vector?

It should be stored as a tensor in the VTK file, and sfepy-view displayes tensors as their magnitude.

r.