RFEM 6 can hardly handle curved surfaces

Product Support Feature Request
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1

I have already mentioned here that for surface elements, the variable shell thickness using 4 points does not work when the surface is curved.

It turns out that a large part of the functions of RFEM 6 no longer work when the surface is curved, including, for example, the surface eccentricity.

Furthermore, bugs occur when exporting NURBS surfaces from Rhino to RFEM. As a validation example, I tried to reproduce results from the following paper:

https://doi.org/10.1016/j.engstruct.2020.110265

Here, it already fails at the export of the NURBS or Brep. Grasshopper/RFEM gives me the cryptic error:

1. Error to write to web service, for object type: E_OBJECT_TYPE_SURFACE, message: The specified row is outside the allowable range of the nested table.

I get this error for 80% of my surfaces that I want to export…

More development regarding curved structures would be very welcome.

Best regards, Rudi

3

Here is a minimal example script

rfemTestScript.gh (13.3 KB)

4

Hi vform_rudi,

Thanks for sharing your file and feedback.
We are currently unable to import all trimmed surfaces directly via the surface component. You can use the boundary lines from the surfaces as an alternative to the GH-Surface Input.
Of course, we need additional development for this in the future.

image
image1920×772 567 KB

Best regards
Paul Sivolgin