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,
The issue at hand pertains to the limitations of Bar elements, which solely account for the axial component. In order to address this, I employed various displacement parameters, including: 1- x total displacement2- y total displacement3- xy total displacement based on orientation4- x phase displacement5- y phase displacement6- xy phase displacement based on orientationRegrettably, none of these approaches yielded the correct values.
Furthermore, I attempted to utilize 2-noded truss elements to incorporate the effects of both x and y displacements in both the phase and total displacement analyses. However, the obtained results were unsatisfactory.
Aside from the information provided in the PLAXIS manual, I would greatly appreciate any additional resources or documents that elucidate the calculation of geogrid axial forces. If you are aware of any such references, I would be most grateful if you could kindly mention them. Alternatively, if there are any handwritten guides or materials available, I would warmly welcome those as well.
Thank you for your consideration and assistance in this matter.