Before asking the question, a little background is needed. In the UK most street lights are "planted". For example, a 6m column, which is the height you see above ground, would usually have about a 1.5m "root" below ground level.
Now, I have a model of a street light which I need to run a wind pressure simulation on. This works absolutely fine if I exclude all geometry that is below ground level from the analysis and put fixed geometry at ground level, but the ground itself plays an important part in deflection and the stresses that are seen, and so really needs to be included as part of the analysis.
My question is, is there any way of being able to simulate the ground conditions that the pole would be planted in?