Coupled section aggregator

sjbrandenberg · Post by **sjbrandenberg** » Thu Mar 08, 2007 10:37 pm

Has anybody implemented a section aggregator that takes a 1-D uniaxial material and converts it to a coupled 2-D section with a circular yield surface? This would be similar to the bi-directional section, but instead of inputting $E, $sigY, $Hiso, and $Hkin, we could input $matTag for some generic uniaxial material.

The reason I am asking is that I would like to run soil-pile interaction problems in 3-D using p-y springs attached to the pile. Attaching two p-y springs in orthogonal directions causes the stiffness and strength to be increased by the square root of two in a direction that bisects the individual spring axes due to the lack of coupling between the two springs.

Thanks,

Scott

silvia · Post by **silvia** » Fri Mar 09, 2007 5:41 am

any way you can try this with a fiber section?

sjbrandenberg · Post by **sjbrandenberg** » Mon Mar 12, 2007 11:02 am

I'll take that as a no.

Your suggestion to try using the fiber model is interesting. I might be able to do it with a fiber model as a roundabout indirect way of actually implementing a new material. Otherwise I'll try my hand at the new material to use with a zeroLength surface.