Reconstruct stiffness matrix

Specifies the initial solution strategy to be used in the nonlinear analysis.

There are three possible settings (solution strategy name is shown in brackets) where each setting is computationally more intensive than the previous:

• Once at each load incrementation step (Modified Newton-Raphson, 1 reformation/step)
• Twice at each load incrementation step (Modified Newton-Raphson, 2 reformation/step).
• At every iteration (Full Newton/Raphson).

If the problem to be solved is known to be only slightly nonlinear, select Once at each load incrementation step which is the fastest of the three options.

If any one or more the following applies, we recommend that you select At every iteration:

• The problem is known to be extremely nonlinear.
• A previous large deflection analysis has failed due to convergence problems.
• You will be using the load incrementation method manual displacement control or manual loading control in this analysis.