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you could try another modelbuilder provided just for testing material .. here is an example i used awhile back model UniaxialMaterialTest uniaxialMaterial Elastic 1 3000 uniaxialMaterial MinMax 2 1 -min -0.001 uniaxialMaterial MinMax 3 1 -max 0.001 uniaxialMaterial MinMax 4 1 -min -0.001 -max 0.001...

Another option is to apply axial shortening to your column. This OpenSees based application allows visualizing stress-strain relations of common steel and concrete materials used in OpenSees https://apps.peer.berkeley.edu/bridgepbee/ I solved the problem by using zeroLength element and changing the...

You are putting the beam into flexure and there is no r/f steel so no tension force to balance compression force. If all you want is stress-strain from a material, use a truss element, not a beam-column element. Thanks professor，I tried to use the truss element, but the program still fails.Then, I ...

uniaxialMaterial Concrete01 1 -36800 -0.002 -6000 -0.008 Can you first replace this with an elastic material to see if the problem is due to this? Thank you so much for your help！The program runs successfully after replacing concrete01 with elastic materials.But I want to get the stress-strain curv...

Hello engineers, I want to extract the stress-strain curve of opensees uniaxialmaterial.I designed a prismatic test block to simulate. Below is the code： wipe model BasicBuilder -ndm 2 -ndf 3 node 1 0.0 0.0 node 2 0.0 0.3 fix 1 1 1 1 uniaxialMaterial Concrete01 1 -36800 -0.002 -6000 -0.008 section F...