How to solve the following problem?

Post Reply
XinhaoFu
Posts: 4
Joined: Thu Mar 06, 2025 11:38 am

How to solve the following problem?

Post by XinhaoFu » Sun Aug 03, 2025 1:21 pm

Dear STKO Team,

Hello!

I encountered an error while trying to create a CatenaryCable element between two nodes. I have checked that all the elements involved are 3D, but I’m still getting this error and I’m not sure where the issue lies. Could you please help me resolve this problem?

Additionally, could you kindly explain the correct procedure for using the CatenaryCable element in STKO?

Thank you very much for your assistance!
Attachments
c31c3b7d8e033c1725d175466735940.jpg
c31c3b7d8e033c1725d175466735940.jpg (94.44 KiB) Viewed 2632 times

STKO Team
Posts: 3066
Joined: Tue Oct 29, 2019 8:45 am

Re: How to solve the following problem?

Post by STKO Team » Mon Aug 04, 2025 8:19 am

That error is saying that node 17 is shared by 2 objects (typically Element Properties), one needs 3 DOFs and another needs 6 DOFs. And this creates an incompatibility. What elements are you using?

XinhaoFu
Posts: 4
Joined: Thu Mar 06, 2025 11:38 am

Re: How to solve the following problem?

Post by XinhaoFu » Mon Aug 04, 2025 8:34 am

One uses elasticBeamColumn, and the other uses CatenaryCable.

STKO Team
Posts: 3066
Joined: Tue Oct 29, 2019 8:45 am

Re: How to solve the following problem?

Post by STKO Team » Mon Aug 04, 2025 1:28 pm

That's why. The beam is 6 DOFs, the cable 3 DOFs.
You have to split the geometry in 2 geometries, 1 for the beam and 1 for the cable, and use an interaction with EqualDOF in the 3 translational DOFs to connect them

Post Reply