This command is used to construct a StaticIntegrator object of the type DisplacementControl.
integrator DisplacementControl $nodeTag $dofTag $dU1 <$Jd $minDu $maxDu>
$nodeTag |
node whose response controls the solution |
$dofTag |
degree-of-freedom whose response controls the solution. Valid range is from 1 through ndf, the number of nodal degrees-of-freedom. |
$dU1 |
first displacement increment (pseudo-time step) in the next invocation of the analysis command |
$Jd |
factor relating displacement increment at subsequent time steps. (optional, default: 1.0) |
$minDu $maxDu |
arguments used to bound the displacement increment (optional, default: $dU1 for both) |
The displacement increment at iterations i, dU(i), is related to the displacement increment at (i-1), dU(i-1), and the number of iterations at (i-1), J(i-1), by the following:
dU(i) = dU(i-1)*Jd/J(i-1)