Problem Terminated - Time-step is too small
I am working on research on Blast analysis on a steel frame structure that has foundation embedded into soil mass. I want to study the effect of soil type on the structure response. Everything worked well except for the end time. The explicit analysis keeps stopping at a time around 13 ms. I would like to see the response of the structure after much of this time like 30 or 40 ms. I have tried everything possible to solve this issue such as: put the minimum timestep to very small number 1e20, use mass scaling, and use (On minimum Element time step). I also tried to change the geometry strain limit to a higher number and the (On material failure). None of these succeeded in making the program continue the solution.
I thought the problem might be from the soil, so I suppressed it from the model.
The Soil and foundation are excluded from Euler domain to prevent the direct exposition of the blast to the soil which will result in the destruction of the soil element.
I am stuck now and I cannot proceed with my research. I appreciate all of your help!
A link of the model is attached to this post.
Blast On Steel Frame