05/06/2026
When analysing foundation slabs, one common question is whether the software can simulate uplift, where part of the slab loses contact with the soil and only compressive soil reactions are transferred.
The answer is yes – but a nonlinear analysis is required.
The process is simple:
🔺 Open the nonlinear analysis dialog
🔺 Enable nonlinear material behaviour
🔺 Run the analysis
🔺 The program automatically deactivates soil contact where uplift occurs
Unlike linear analysis, where the soil contact transfers both compression and tension, the nonlinear model only transfers compressive soil reactions. This allows AXISVM to realistically simulate partial loss of contact and foundation uplift.
A useful tool whenever uplift or separation between the soil and structure may influence the design.