warning in time history analysis

[saharnaz]

hi friends.
my model is a 6 story RCmoment frame with buckling restrained knee braces,when i do time history analysis the analysis does not run successfully even when i use various algorithms, what should i do?
Warning: CTestNormDispIncr::test<>-failed to converge
after 50 iterations
NewtonLineSearch::solvecurrentstep<> -the convergencetest object failed in test<>
directIntegrationAnalysis::analy failed at time 2.1425
opensees>analyze failed, returned:-3erroe flag

[fmk]

and do you try initial stiffness iterations if it fails?