Search found 4 matches

by howserrn
Mon Aug 04, 2008 12:50 am
Forum: OpenSees.exe Users
Topic: J2Plasticity
Replies: 1
Views: 2621

J2Plasticity

I am trying to use a J2Plasticity material in my model. To use this material, I must include a linear and exponential hardening parameter. I was assuming that the linear hardening parameter would be "k" from the Drucker-Prager model. That may or may not be right. I have no idea what the ex...
by howserrn
Sun Jun 29, 2008 10:19 pm
Forum: OpenSees.exe Users
Topic: Element Failed to Converge
Replies: 4
Views: 3881

I tried using the normal steel and concrete modules and got the same error.
by howserrn
Sun Jun 29, 2008 10:18 pm
Forum: OpenSees.exe Users
Topic: Element Failed to Converge
Replies: 4
Views: 3881

I'm sorry. I should have explained that. I am working on a research project for the University of Houston. UH developed a model known as the Cyclic Softened Membrane Model (CSMM) in 2005. The model predicts the nonlinear shear behavior of reinforced concrete membrane elements. A couple of years ago,...
by howserrn
Sun Jun 29, 2008 6:08 pm
Forum: OpenSees.exe Users
Topic: Element Failed to Converge
Replies: 4
Views: 3881

Element Failed to Converge

I am attempting to model a fairly complicated 3D frame that consists of 2 stories, 2 bays in the x-direction, and 1 bay in the y-direction with shear walls. I think I am fairly close, but I keep getting the error message: ForceColumn3d::update - failed to get compatible element forces & deformat...