Surface - all around new cutting method

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From patch 21.1.2 there is a new cutting method "Surface - all around" available for the Cut operation. This solves the problem of cutting members and plates through hollow sections.

Curved hollow sections in IDEA StatiCa (e.g. CHS) are represented by a polygon of multiple plates composing the shell of the member. When a hollow section is cut by the cutting method Surface, the cut plates are divided into two parts and only one part remains, while the other one is cut off. There is no workaround to cover this issue with this cutting method.

For such cases, there is the new cutting method Surface - all around, which doesn't cut off any part of the member shell except the shape that goes thru it.

Note that cutting methods Surface and Surface - all around may lead to slightly different weld geometries. Especially for CHS cross-sections, where the Surface method is specifically modified to avoid bad mesh with very small triangle lengths.

Also, the position of one-sided fillet welds is changed compared to the surface method, which is immediately visible in the 3D model. 

Available in both Expert and Enhanced editions of IDEA StatiCa Steel.