I am trying to use the Dafalias Model in its version that was implemented by Zhao Cheng.
When using it in anything other than the Element-Test from the documentation, I receive the error message:
“Dafalias model: initial pressure is not positive.”
Does anyone have similar issues? Why would the Element-Test from the documentation work with negative e.g. compressive stresses while other examples like " Excavation in a Saturated Soil" (see its application on the attachment) produce the before mentioned error message.
Main.dat (3.5 KB)