Newton-Raphson Residuals (2)

As a follow up to the previous post, here's my slightly different take of the Newton-Raphson Residuals.

The help manual shows a nice gradually decreasing stiffness curve (similar to Figure 1). It didn't match what I learned in school or Wikipedia where the algorithm was used to find the root. By rephrasing the question as finding the root for the Newton-Raphson Residual (External - Internal Force), one then gets to Figure 2.

The Octave/Matlab script used to create the above plots can be found here.

Comments

Popular posts from this blog

ANSYS APDL Syntax Highlighting editor

ANSYS User Defined Results

Export Stiffness Matrix from Ansys