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I have similar experience. But in my case I recognized that I tried to complie the codes without turning off opensees.exe. When I turned it off, I could succeed in compiling without any error like yours.

Of course there can be another possibility for that error.
Anyway why don't you try it?

Hello, I recommend you that you check whether the opensees.exe is correct. In some cases an opensees.exe does not include ElasticIsotropicPlaneStrain2D or ElasticIsotropicPlaneStress2D models within nDMaterial Models, specifically within TclModelBuildernDMaterialCommand.cpp. If then, you have to mod...

Hello, As you know, there are so many material and element models in OpenSees. But it is very difficult to understand how and/or where to use them. Of course, some of them can be easily used in an analysis. Can anybody let me know to where i can apply those material models, especially nDMaterial mod...

Hello, This is not the answer you want to hear, but just another question. If you try to analyze the stress-strain behavior of embankment dam, section of dam concerned must be divided into a set of increments and construction of material must be performed incrementally. So, in this case, how do you ...

Hello, everybody;
I can find many 'makefiles' in the source codes of OpenSees. But I don't know their usage for what. Are they needed in implementing certain models? or...