Question about "HFIX" in CSM GRP

[netsonic_Sofistik]

csm20_opti_intro_staged_analysis.dat (13.5 KB)
In the above sofistik official example (C:\Program Files\SOFiSTiK\2025\SOFiSTiK 2025\csm.dat\english\optimize\csm20_opti_intro_staged_analysis.dat), I don’t understand the teddy code as below

CS   140  TYPE G_1 TITL 'segment 4 + cable' ; GRP 4,104                   HFIX 141 $ last segment placed on cantilever with dead load
                                                                                   $ and then welded (one step later welded)

“HFIX” is to fix the hinge, but I don’t find any hinge definition in the attahced teddy code, then why it need “HFIX”?

[OMRI2024]

Hi,
The definition of degrees of freedom is done in the SOFIMSHA module using the “AHIN” and “EHIN” items.

Here is an example of the code:

BEAM fit NA #1 #1+1 NCS 1 DIV #div AHIN MY EHIN MYN

This code releases the moment MY at the beginning of the beam, as well as the normal force N and the moment MY at its end. As a result, no force is transmitted between the beam and the rest of the connected structure.

To restrain these degrees of freedom, the “HFIX” item is used in the CSM module.

Abderrahman OMRI