uniaxialMaterial Bond_SP01 and zeroLengthSection element

[nbubzy]

Dear everyone,
Dear Silvia,Frank,Michael
I use uniaxialMaterial Bond_SP01 and zeroLengthSection element to simulate a segmental precast column pier under the cyclic load of test.
But can't convergent.I add the equalDOF to the zerolength element to add shear boundary to the zerolength element of comlumn.
The error message is as below


load factor 45630.7
OpenSees > analyze failed, returned: -3 error flag
WARNING BandGenLinLapackSolver::solve() -LAPACK routine returned 28
WARNING NewtonRaphson::solveCurrentStep() -the LinearSysOfEqn failed in solve()
StaticAnalysis::analyze() - the Algorithm failed at iteration: 0 with domain at
load factor -424434
OpenSees > analyze failed, returned: -3 error flag
WARNING BandGenLinLapackSolver::solve() -LAPACK routine returned 28
WARNING NewtonRaphson::solveCurrentStep() -the LinearSysOfEqn failed in solve()
StaticAnalysis::analyze() - the Algorithm failed at iteration: 0 with domain at
load factor 45630.7
OpenSees > analyze failed, returned: -3 error flag
WARNING BandGenLinLapackSolver::solve() -LAPACK routine returned 28
WARNING NewtonRaphson::solveCurrentStep() -the LinearSysOfEqn failed in solve()
StaticAnalysis::analyze() - the Algorithm failed at iteration: 0 with domain at
load factor -424434
OpenSees > analyze failed, returned: -3 error flag


who can tell me why?