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When i use the u-p element, i have to impose some nodes the boundary condition of pore. Because pore is the third ndf , i use the command below: set sin "Sine $istart $iend $period " pattern Plain $i $sin { #apply pore sp $snodenum 3 $A } Those nodes have been set drainage before ! But the...

in seismic analysis of a ground,wo often use a shear beam contraint across the horizontal direction of the soil domain. According to this shear beam contraint, the two later boundaries (vertical sides)of the soil domain are contraint to deform similarly in the lateral direction by imposing equal hor...

i have the same problem with you!
Is it a bug with the element quadUP?

When I do an analysis on a ground in seismic ,i chose PressureDependMultiYield material for sand.But i meet a problem ,which material should I choose for clay?If I also select PressureDependMultiYield material for clay ,I don't know how to give parameter values for clay!