HOW GEOGRID MOBILIZED AXIAL FORCES ARE CALCULATED IN PLAXIS 2D?

Dear colleagues,


I am currently engaged in a study aimed at understanding the precise methodology employed by PLAXIS 2D in the calculation of strain and forces within geogrid elements. I have encountered difficulties in replicating the mobilized axial forces reported by PLAXIS using various approaches, such as phase and incremental displacement analysis.
Attached are the results of a simple analysis, where I have attempted to determine the forces based on these methodologies. However, my calculations have not aligned with the values reported by PLAXIS for the mobilized axial forces.
I kindly request your assistance in deriving the correct value for just one of the mobilized axial forces. It is worth noting that the elastic stiffness (EA) used in the analysis is 2.8E5.
Thank you in advance for your invaluable support.


Best regards,