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Actually,
The main problem is, how may I call displacements of any node in my code?

Hi, I am trying to define new uniaxial material. The behavior of material will be defined with respect to drift of two nodes. That means I need to get displacemens of two nodes in my material. I am using the following codes. /////////////////////////////////// Domain *theDomain = 0; theDomain = OPS_...

Hi,
I have been working with OpenSees for three years.
I have just noticed that OpenSees gives different results with different computers; one is windows 7 and other is Ubuntu 14.04. The code is totally same, however; the result is different. Is this normal? Or there is problem with my computers.

Thank you for your reply.

I can plot time vs displacement and time vs force at each time step by using closeOnWrite, however I want to plot force vs displacement of a node at each time. In OpenSees, as far as I concern it is not possible to record nodal force and displacement into one file. Is it possible? And I wonder, it i...

Hi, Currently I am working on modelling a shear critical reinforced concrete column in OpenSees. As recommended, I am using additional zero length spring to apply shear deflection and shear strength degradation to column. However, I am exposed to a problem for model. When I run a pushover analysis, ...

I have checked commitStrain. It alwasys equals to zero.
I dont understand why?
strain is ok.

fmk,
Thank you for your help.
But I know what fabs() means.
I tried to find the difference between absolute value of current (time n) strain and absolute value of previous (time n-1) strain.
Thus, I used "commitStrain" as previous (time n-1) strain. Is it true?

Hi, I am writing a code to define a spring. And I need to use strain(n-1) to calculate strain(n). However, I dont know how to do it. I used commitStrain but it did not worked. Can you help me?? for exdample; " double dStrain = fabs(strain) - fabs(commitStrain); if (dStrain < 0.0) { unloading ()...

Is it possible to define the load applied each step of analysis?
The load is not regular and I want to define them by hand or from a file.
I reviewed the examples of dynamic analysis. In that examples, the accelerations are read from file not the load. I want to define load.

I got the solution.
DEVELOPER/element/cpp export LD_LIBRARY_PATH=.
the commands provides the solution.

Thank you fmk...
export LD_LIBRARY_PATH=.
the command solved my problem. In the directory of the new element, I typed the command and it worked.

I think I have same problem. Although I have tried the the way described above, nothing has chaged.
Same problem.

Thanks...

Thank you fmk, it was ActiveTcl8.6... but I installed ActiveTcl8.5 and now it is working. I have another question, do i need to anything more to add a new code. I typed 'make' under DEVELOPER/element/cpp , all the files .so and .o was created. But I still cannot run the example1. Is there something ...

Thank you Fmk