topic Re: Connection in Robot Structural Analysis Forum

Connection

durducgeorge — Thu, 12 Sep 2024 20:09:53 GMT

Hello,

Somebody know if it is possible to create in VBA or C# a connection with its characteristics?

Thanks

Re: Connection

Stephane.kapetanovic — Fri, 13 Sep 2024 02:49:32 GMT

hi @durducgeorge

you should read this topic

https://forums.autodesk.com/t5/robot-structural-analysis-forum/api-create-a-frame-knee/m-p/8302913

RobotApplication RobApp = new RobotApplication(); IRJointConnectionServer JointServer = RobApp.Project.Connections; RJointConnectionInfo JointInfo = JointServer.CreateInfo(); JointInfo.DefType = IRJointConnectionDefType.I_JCDT_STANDALONE; IRJointConnection Connection = JointServer.Create(IRJointConnectionType.I_JCT_KNEE_WELDED); IRJointKnee KneeWelded = (IRJointKnee)Connection; KneeWelded.Beam.Section = "IPE 300"; KneeWelded.Column.Section = "IPE 300"; Connection.SetToRobot(JointInfo);

Best Regards

Re: Connection

durducgeorge — Thu, 12 Sep 2024 23:29:06 GMT

Snippet

Thanks! it works!

But I want to assign to a node this connection (for example node 5, baars 4
et 2).

I get an error with my code.

Do you know where is the problem?

[image: image.png]

RobotApplication RobApp = new RobotApplication();
IRJointConnectionServer JointServer = RobApp.Project.Connections;
RJointConnectionInfo JointInfo = JointServer.CreateInfo();
JointInfo.DefType = IRJointConnectionDefType.I_JCDT_IN_STRUCTURE;
JointInfo.Type = IRJointConnectionType.I_JCT_BEAM_COLUMN;
RobotSelection robSelbar;
RobotSelection robSelNode;

IRJointConnection Connection =
JointServer.Create(IRJointConnectionType.I_JCT_KNEE_BOLTED);

IRJointKnee KneeBolted = (IRJointKnee)Connection;
KneeBolted.Beam.BarNumber = 2;

KneeBolted.Column.BarNumber = 4;

Connection.SetToRobot(JointInfo);

Re: Connection

Stephane.kapetanovic — Sun, 22 Sep 2024 09:34:25 GMT

hi @durducgeorge

you're wright, it seems that the barNumber parameters for the beam and column have get and set accessors.

Best Regards

updated

RobotApplication RobApp = new RobotApplication(); IRJointConnectionServer JointServer = RobApp.Project.Connections; IRJointConnection Connection = JointServer.Create(IRJointConnectionType.I_JCT_KNEE_WELDED); int num = 1; RJointConnectionInfo Info = JointServer.CreateInfo(); Info.DefType = IRJointConnectionDefType.I_JCDT_IN_STRUCTURE; Info.Name = $"Knee Welded {num}"; Info.Number = num; Info.Node = 2; Info.Elements.FromText("1 2"); IRJointKnee Knee = (IRJointKnee)Connection; Knee.KneeType = IRJointKneeType.I_JKT_BEAM2COLUMN; Knee.BracketLow.Exist = 1; Knee.BracketLow.Length = 1000; Connection.SetToRobot(Info);

Re: Connection

durducgeorge — Sun, 22 Sep 2024 12:24:27 GMT

Thank you @Stephane.kapetanovic ,

But I've tried many times and I don't understand why I have this error.

Do you have some solutions that I can fix it?

Best regards!

Re: Connection

Stephane.kapetanovic — Wed, 23 Jul 2025 08:30:59 GMT

hi @durducgeorge

The API itself is not the issue; the problem lies in the availability of the connection server. A good practice is to first ensure the structure has been analyzed and to manually create a connection in standalone mode. This will activate the server. You can then run your script to generate the connections, making sure to handle the numbering carefully.

Best Regards

Re: Connection

durducgeorge — Sun, 22 Sep 2024 13:48:36 GMT

You are right @Stephane.kapetanovic , it works that way!

Thanks a lot!

Best regards,