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Can someone please provide the formulation details of singleFPbearing element in OpenSees, In the Opensees site there are no references to the formulation. Accord to the website : Image with the circle of FY/Fx and FZ/FX is given, Limit is given as the coefficient of friction. Along with the same im...

In my model this won't be a problem as mine is not a single DOF, I changed some material properties and the error disappeared.

Hi I am doing eigen analysis on building with bearings, for bearings i am using ElastomericBearingBoucWen element when i did eigen analysis i am getting the error as below ArpackSolver::Error with _saupd info = -9999 Could not build an Arnoldi factorization.IPARAM(5) the size of the current Arnoldi ...

Did you solve this issue?
Even I am getting the negative eigen value when 3d frame is isolated with LRB isoator?

Can I use Layered shell elements for modelling the dome structures?
I need to model Reinforced concrete dome structure, can someone suggest me the element type?

Dear selimgunay I will check with above. I have new problem of non-convergence during IDA. I am using lumped plasticity model when I do the the dynamic analysis there is convergence problem, so I increased the tolerance (initially it was 1 e-8) to 1e -4 ,it is working without convergence problem. I ...

I am new to OpenSees. I am using Concrete07 material, for specifying the properties of concrete07 material model I found formulae from the below site https://opensees.berkeley.edu/OpenSees/manuals/usermanual/4055.htm when I compare the values for ec0(maximum compressive strain) for US cutomary units...

Hi frank, I had model building frame using fibre distributed element model,I used the NonlinearBeamColumn element for this ,I had followed the example7(3D FRAME) given in OpenSees website,i changed units to SI and material properties.When I increase the number of fibres in core concrete patch (initi...

Hi everyone, I am working on seismic vulnerability assessment of buildings.I need to model a RC building for Incremental dynamic analysis in order to get fragility curves.I have read the research papers on this analysis.In all papers they are doing the IDA on lumped plasticity structure model using ...