Newton with Line Search Algorithm

This command is used to construct a NewtonLineSearch algorithm object which uses the Newton-Raphson method with line search to advance to the next time step.

algorithm NewtonLineSearch $ratio

$ratio

limiting ratio between the residuals before and after the incremental update (between 0.5 and 0.8)

If the ratio between the residuals before and after the incremental update is greater than the specified limiting ratio the line search algorithm developed by Crissfield (REF?) is employed to try to improve the convergence.