There has been a problem in Diamonds with finding the outline

On calling the wind generator for a selected 2D frame.

Solution

The 2D structure is not a closed contour (besides the supports). Somewhere in the selection of two or more bars are not properly connected.

1. Zoom in a couple of times at different points of the selected 2D structure and the cause will be visible.
2. Modify the structure in the window geometry manually, or use the ‘Structure verification‘ function. This function will merge points that are closer together than a specified tolerance.
3. Check the model accuracy. (when merging points, the boundary conditions and supports of these items may have been removed)