enforce cyclic dicplacement in model

[kavir]

hi
i model a truss element for a axial element and enforce it cyclic displacement.its material is steel01.but when i run it ,show many eror. can you help me.

after build model builder in 2dimension and 3DOF i build element.its constraints condition is (fix 1 1 1 0 &fix 2 0 1 0)
and i define a load pattern for lateral loading in node 2 at DOF 1. other parameter show below:
constraints Plain
numberer RCM
system BandGeneral
test NormDispIncr 1.0e-8 20
algorithm Newton
integrator DisplacementControl 2 1 0.00001 1 0.00001 0.00001
analysis Static
analyze 10

integrator DisplacementControl 2 1 -0.00001 1 -0.00001 -0.00001
analysis Static
analyze 20

integrator DisplacementControl 2 1 0.00001 1 0.00001 0.00001
analysis Static
analyze 10

[mhscott]

This forum is for reliability analysis only, not general modeling issues.

With that said, you can try putting an 'sp' command inside a load pattern in order to enforce cyclic displacement control.

[kavir]

thank you and excuseme