I am doing a research on the effect of different soil types on the behavior of a structure under blast loading. I have created a small structure and put a TNT charge near one of the columns as shown in the first picture. I modeled a soil mas (highlighted in the model) around and underneath one of the footing only and not for the whole are in order to have a light analysis. the problem is that now after 24 hours of running I do not see any change in the energy graph. However, if I removed that mass of soil then change in energy occurs. I feel like this long analysis is going to nowhere. Help please!