3.2.6.3. MinimumUnbalancedDisplacementNorm

This command is used to construct a StaticIntegrator object of type MinUnbalDispNorm.

integrator MinUnbalDispNorm $dlambda11 <$Jd $minLambda $maxLambda>

Argument	Type	Description
$dlambda11	float	First load increment (pseudo-time step) at the first iteration in the next invocation of the analysis command.
$Jd	float	Factor relating first load increment at subsequent time steps. (optional, default: 1.0)
$minLambda	float	arguments used to bound the load increment (optional, default: $dLambda11)
$maxLambda	float	arguments used to bound the load increment (optional, default: $dLambda11)

3.2.6.3.1. Theory

The load increment at iteration i, \(d\lambda_{1,i}\) is related to load increment at i-1, \(d\lambda_{1,i-1}\), and the number of iteration at (i-1), \(J_{i-1}\) by the following:

\(d\lambda_{1,i} = d\lambda_{1,i-1} \frac{J_d}{J_{i-1}}\)