When performing a Safety analysis with a Target Factor of Safety (ΣMsf), the calculation will first pass the target value to ensure that this ΣMsf value is a “stable” value before returning to the specified target value, see also the related article for more background information.However, when the calculation jumps back to the calculation step prior to reaching the target value, the force values in the embedded pile row are not (re)set to this calculation step (point C in the image below), but are still taken from the step with a higher ΣMsf (point B) before performing the final calculation step (point D). Now the embedded pile row forces are not correct for this final step of the Safety analysis with a Target ΣMsf.
This issue is now resolved for PLAXIS 2D AE and PLAXIS 2D Classic
For older versions, some work arounds are mentioned below:
To find the correct forces in the embedded pile row, the step in which the value for ΣMsf is equal to the value for the Target ΣMsf should be manually determined and then inspected:
To continue phases from this situation with the correct value of ΣMsf: