The OpenSees Community

:twisted: Hi all, I am having a problem with some uniaxial material material that I defined. Let say, I defined two uniaxial materials (i.e., Mat1 and Mat2). In order to combine Mat1 and Mat2 using a parallel material, I need to give the correct initial stiffness of both Mat1 and Mat2, right? Otherw...

:twisted: Hi all, I need your help on OpenSeesTk.exe. I use OpenSeesTk for testing uniaxial material, graphicly. I put OpenSeesTk provided in the workshop cd in the directory OpenSees\SCRIPTS and then I used the command "source" to call strain.tcl to open a graphic window for testing uniax...

:twisted: I got a problem about defining a new material model into OpenSees. I can incorporate material models into OpenSees but they are just in the forms stress = function( strain, strainRate). Now I need to define stress = function( stress,strain,strainRate). I can used ODE solver in matlab to si...