Hello,
I am attempting to model a plate subject to an upward imposed displacement in a soil mass with two soil layers (see figure below). I activated the plate, the displacement and both soil polygons and then started the calculation.
This resulted in Error 111. Have I missed something in the setup to stop the soil from collapsing?
Dear Mr. Sean,
You can try to use different phases to activate the plate, displacement, and soil polygon.
According to Plaxis reference, Error 111 means the soil body collapse, which indicates that the large deformation of soil occur and caused the calculation to reach the divergence condition. You can try to use different inputs for prescribed displacement to see whether it is caused by the large displacement or the numerical problem.
Dear Sean,
The comment from Ari Surya Abdi is relevant, indeed.
There might be various reasons why this failed. Note that by putting the plate at the Xmin PLAXIS will assume you run a half symmetric model or a circular footing in case of axisymmetry being used.
In general, for a soil body collapse error, in order to find out what the mechanism for failure is, and so possibly determine the cause, these Output plots should be inspected:
A combination of these plots will usually give insight into what is happening.