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ETABS covergence proble for reinforced concrete structure with viscoelastic dampers (VED)

ETABS covergence proble for reinforced concrete structure with viscoelastic dampers (VED)

ETABS covergence proble for reinforced concrete structure with viscoelastic dampers (VED)

(OP)
I'm currently designing reinforced concrete struecture with viscoelastic dampers using nonlinear direct integration analysis for my thesis, i have a problem about convergence, i,m using hiber-hughes taylor for time integration and i already try using alpha = 0 or -1/3 but still can't converged, before i did the direct integration analysis i already used fast nonlinear analysis (FNA) without any structural member hinge and the only nonlinear behaviour is the link as represent the VDED. i already tried nonlinear direct integration but only beam using hinge and it can converged but when i try using both beam and column hinges it cant converged, so i think the problem is in the column hinges. so i checked many times i dont think there is a problem in there too. i'm using hinges from ASCE 41-17 in chapter 10 and the Mu/my got from XTRACT. can anybody tell me where did i do worng? where should i checked first?

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