beamColumnJoint problem!

[alirezaee]

Dear all proffessionals

I`ve created a steel moment frame and used beamColumnJoint element for the connections, but the program sees the model as an unstable. When i omit the beamColumnJoint element and use simple connection the program has no problem. may anyone please help me?!

[vesna]

What is the error message that you get?

[alirezaee]

the error is:

CTestNormDispIncr::test<>-failed to converge after:1000 iterations
NewtonLineSearch::solveCurrentStep<>-the ConvergenceTest object failed in test<>
DirectIntegrationAnalysis::analyze<>-the Algorithm failed at time 0.02
Opensees>analyze failed, returned:-3error flag

[vesna]

I never used BeamColumnJoint element but many users of OpenSees used it successfully.

There is also an example: http://opensees.berkeley.edu/wiki/index ... intExample that may help you in solving your problem.

[alirezaee]

Dear Vesna

tnx for your answer.....
another question......can the beamcolumnjoin element be used in sttel models? or this is just for RC models?

[vesna]

The joint element is developed for RC frame systems.

[snarsingh]

@vesna---Can we use beamcolumnjoint element for RC exterior joint??? thanx

[fmk]

yes.

[snarsingh]

@ fmk---thank you very much for your response---- I am thinking of giving very very stiff bar-slip and and interface-shear uniaxial material at the node 4 while modelling for exterior joint. Will it work?---Thanx