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if you open the opensees.exe via the command prompt, the window wont close and you will see the error straight away. Just google how to open a cmd window in current directory and its pretty easy from there.

What are the parts of the analysis that need to be changed to make it work properly?

This forms one element of a system i will be testing using a displacement history so i am trying to get the single element with an initial strain before i build it into the final model.

Thanks for your help.

Thanks for that.

Does this mean it is not possible to use a displacement control integrator when using a initstrain element?

Thanks for your reply. The file LoadDispPT.txt is actually the recorder file that the results are outputted to, so this can be obtained by just copying and pasting the code I've copied in above, and running in OpenSees. When I use a PT = 0, the response is exactly as expected - a linear force-displa...

Hi, I am trying to put a tension force into an element and then load into tension. I am doing this using a corotTrussSection element with a material InitStrainMaterial that applies an initial strain to a previously defined material, which for this case I am just using a Linear Elastic Material. The ...