elastic-plastic compression-only soil spring in SAP
elastic-plastic compression-only soil spring in SAP
(OP)
Anybody modelled elastic-plastic soil spring (compression only) for the underground structure in SAP?
I read the CSI analysis reference manual. By defining the link/support property can have a non-linear spring. Looking at the Wen Plasticity Property in Page 242, how can we define a compression-only spring with elastic-plastic behavior?
Heaps Thanks.
I read the CSI analysis reference manual. By defining the link/support property can have a non-linear spring. Looking at the Wen Plasticity Property in Page 242, how can we define a compression-only spring with elastic-plastic behavior?
Heaps Thanks.





RE: elastic-plastic compression-only soil spring in SAP
If you're not looking to model any hysteretic behaviour, the simplest way is just to use the multi-linear elastic link. You can basically define any nonlinear curve you want in there (in terms of x-y, or displacement-force, coordinates); and if you wanted compression only you can just define a flat curve on the tension half of the graph.
Hope that helps