Dynamic Analysis not converge

[skymarker]

Dear all:
I with opensees to do the seismic analysis of a 2D dam.Steady-state analysis is the convergence,but Dynamic analysis process does not converge.I do not know why?Since the steady-state calculations, modeling should be no problem .Is the material definition problem,Or acceleration input ?Please advise!!!
My dam's the main material is defined as follows:
coer material:
nDMaterial PressureIndependMultiYield 1 2 2.15 121300 363900 43 0.1 30 100 0.55 30
Transition zone material:
nDMaterial PressureDependMultiYield02 2 2 2.17 121800 365400 40 0.001 100 0.33 26 0.013 0.0 0.3 0.0 30 5.0 3.0 1.0 0.0 0.532 0.9 0.02 0.7 101.0
Filter layer material:
nDMaterial PressureDependMultiYield02 3 2 2.20 130600 391800 40 0.001 100 0.32 26 0.013 0.0 0.3 0.0 30 5.0 3.0 1.0 0.0 0.532 0.9 0.02 0.7 101.0
Rockfill zone material:
nDMaterial PressureDependMultiYield02 4 2 2.23 233600 700800 40 0.001 100 0.27 26 0.013 0.0 0.3 0.0 30 5.0 3.0 1.0 0.0 0.532 0.9 0.02 0.7 101.0
My element is Four quadUP element
My dynamic analysis is:
constraints Penalty 1.e16 1.e16
test NormDispIncr 1.0e-3 35 1
algorithm Newton
numberer RCM
system ProfileSPD
integrator Newmark 0.5 0.25
rayleigh 0 0 0.001 0.0
analysis Transient

# perform analysis with timestep reduction loop
set [analyze 2000 0.01]


I look forward to your reply!!!!