5.5.1. Linear AlgorithmΒΆ

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

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

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


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.