Dynamic Analysis - Moving load trains

Hello,

I have a railway culvert where I am trying to perform a dynamic analysis utilising the moving load trains workflow as per: Dynamic Analysis - Moving Load Trains - SOFiSTiK Tutorials 2024

I have followed the workflow and ended up with the following code:
+PROG FEABENCH urs:114.1
HEAD Dynamisk analyse

TASK TYPE MLT
$ECHO DTC FULL
ECHO FULL yes

GRP NO - FACS 1 FACM 1 MODD 0.026 FRQ1 22.29 FRQ2 45.27 $ Damping definition
$ FRQ1 and FRQ2 signifies the range of interest for the frequencies.
$ Typically FRQ1 is the first bending mode of the structural part in question, or the sctructure and
$ in the SOFiSTiK video they choose FRQ2 as the 3rd bending mode, which indicates that you should consider
$ both frequencies according to the structural part in question

LC 499000

STEP TYPE GENA RHOI 0.8 TVAL AUTO DT AUTO LCR CONT INT 10
DTC ETYP NODE ITEM AG ROI ALL FMAX 45.27

MOVL LCT 104 TRCK ‘GAX’ ID “DYN2” V 63.89[M/SEC] LDA 0.6 LDB 0.5 TDIR POS STYP S SVAL STRT YEX 0

HIST ETYP QUAD ITEM MXX ROI 4000934 HC 500000
EXTR ETYP QUAD ITEM MXX XTYP MAMI LCR 500000

END

When I run it however, I get the following error message:
image

Here is an image of the culvert roof with the relevant axes’.

Apparently I forgot to add the actual question!

Why do I get this error message?
There does not seem to be anything wrong with the code as I have compared it with the video from the link I provided.
I have tried several axes’, but they all get the same error message. All the axes are created using Teddy, and defines using GAX, so they are main axes’.

Same issue here! Any feedback on the matter? Thanks!

You need in all cases a node sequence along the chosen axis DYN2.
In SOFiSTiK tutorial there is one, because there is only one superstructure and therefore there are structural lines along this axis that build this node sequence.

Thank you! That explanation really helped clarify things.