Help failed to converge

[Oreste]

I built a model plane on the beam Opensees,using 10050 quad elements (plane stress) for concrete, truss elements for the longitudinal reinforcement bars, truss elements for FRP and zero-length elements as interface elements.
I assign nDMaterial FAReinforcedConcretePlaneStress quad elements.
I'm having problems with the convergence algorithm, Opensees tells me:
WARNING: CTestNormDispIncr:: test <> - Failed to converge
after 100 iterations
AcceleratedNewton: solveCurrentStep <> - The object ConvergenceTest failed in tests
<>
StaticAnalysis: analyze <> - the Algorithm failed at iteration: 0 with domain at load factor of 0.1
Opensees> analyze failed, Returned: -3 error flag

I saw the example posted on Opensees manual says:
WARNING .. Submitted CODE AS AT PRESENT DOES NOT APPEAR TO WORK .. LOOK AT CONVERGENCE IN EXAMPLE

I hope someone help me

P.S.

applying a load of small entities, are elastic and everything works on the branch, the branch inelastic however, does not converge and gives me error.

[fmk]

as the manual page you stumbled across says the code at present DOES NOT APPEAR TO WORK .. that is why the manual page is not easily found in the manual and you had to do some searching to get it.

i cannot help you with the convergence

the authors of the code in their examples continue on even though convergence is not achieved .. flag of 5 in convergence test does this.