AnsweredAssumed Answered

Elastic supports used to model soil stiffness

Question asked by Derek Bishop on Oct 5, 2010
Latest reply on Oct 8, 2010 by Derek Bishop

I'm doing some FEA on a corrugated sheet metal tunnel that will be installed as a 5 m diameter reclaim tunnel under an ore stock pile. Think of it as a big round pipe buried under dirt. There is a rectangular cut out in the top but that is irrelevant to this question.


Not sure how to restrain the model. An elastic support with the appropriate stiffness of soil and a normal pressure to represent compaction of the soil around the tunnel is my current thinking. Question is when doing an elastic support, does it represents a stiffness in both directions. That would be true for most materials. Dirt is a bit different. It will compress with a certain stiffness but it won't spring back the other way with the same stiffness. Any thoughts.