2 Replies Latest reply on Oct 13, 2016 11:35 AM by Bill McEachern

Modelling Ground

Francis Lillie Oct 13, 2016 10:38 AM

Hi,

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?

Thanks,

Francis

Re: Modelling Ground

Bill McEachern Oct 13, 2016 11:33 AM (in response to Francis Lillie)

yes but the problem is then a NL material and contact problem. Typically a Drucker Pager model is used for soils. You need to have the material model parameters. If can obtain those you can do the problem but these are a bit tricky to solve.
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Re: Modelling Ground

Bill McEachern Oct 13, 2016 11:35 AM (in response to Francis Lillie)

One more thing: if you think a linear approximation of the soil is a reasonable thing to do you can do it in any version of simulation.
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