hello, I am new to abaqus.
I am modeling a soil under seismic exitation with abaqus. the soil is a 2D rectangular elastic model.
As i was creating the mesh, i didnt pay attention and abaqus by deffault took plane stress. Is it a big problem that i work with plane stress or i should restart the calculation with plane strain ?
Thanks,
belhajj.
Plane strain and
Plane strain and axisymmetric analyses are more common in geomechanics. Nevertheless, it pretty much depends on the geometry and nature of the problem you are modeling. Retaining walls, tunnelling (not always), slope stability are usually considered plane strain. Plane stress analysis is more commonly applicable to structural elements such as shells.
Hope this helps out.
Saeed
Plane stress/strain
Dear Belhajj,
It depends on what you want to model. If you have zero out-of plane strains your model should be plane strain. If you have zero out-of-plane stresses your model should be plane stress. Usually in geomechanics the soil is modeled either as a 3d domain or as a 2d plane strain domain.
George Papazafeiropoulos
______________________________________
First Lieutenant
Infrastructure Engineer, Hellenic Air Force
Civil Engineer, M.Sc., Ph.D. candidate