Beam calculation with CATIA shell finite element analyse

In this video, I will show you a huge difference in some approximation when we use rectangular or square hollow thin-wall cross-section as a surface model and using plate or shell finite element

We have to be aware that if we neglect the radius of the rectangular hollow cross-section we will get totally different results from the real situation
Also, you will see advice how to cut off the time of calculation helping the catia solver ELFINI to check nodes for contact only on the surface which is smaller