linearAlgo.rst

Linear Algorithm

algorithm('Linear',secant=False,initial=False,factorOnce=False)

Create a Linear algorithm which takes one iteration to solve the system of equations.

secant	Flag to indicate to use secant stiffness. (optional)
initial	Flag to indicate to use initial stiffness. (optional)
factorOnce	Flag to indicate to only set up and
factor m	atrix once. (optional)

Note

As the tangent matrix typically will not change during the analysis in case of an elastic system it is highly advantageous to use the -factorOnce option. Do not use this option if you have a nonlinear system and you want the tangent used to be actual tangent at time of the analysis step.