Hi,
I am working on as similar problem; determine the dynamic properties for soil nails by applying Impulse-Response technique. In order to model the contact between the soil and the nail, I started with a very simple case. I modelled the contact between the soil and a steel rod by itself using...
Thank you for you note regarding to soil elements.
Your question about contact is so general! Could you please be more specific so I may help you. I have modeled a very few contact problems and I ran into many problems; some of them I worked them out and I am still working on the others.
Tareq