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Hello, I have been conducting Incremental Dynamic Analysis on a bridge. The bridge has one pier which I modeled with a BeamWithHinges element. While most of the records that I use converge, with some of them, a problem occurs. The error message is as follows WARNING - ForceBeamColumn3d::update - fai...

Disregard my previous post, it seems that I made a mistake in the OpenSees-Matlab interaction. I am sorry
Although, I would still like to know what combination rule OS uses in order to calculate the response (Linear, SRSS, CQC)

Hello, I am conducting some tests on a simple 2D fixed-base SDOF system. I am trying to run the analysis for two (2) simultaneous UniformExcitation Patterns; one of them being a translational time-history acting on direction (1) (X) and the other being rotational around axis (3) (Z). After running t...

Since my intention was to be able to modify the characteristics of the column, almost everything is expressed in terms of parameters and nodes and elements are created through loops, so it may be hard to read. The code is as follows: wipe all; source INPUT_1D\\OPENSEES1DINPUT.txt file mkdir OUTPUT_1...

I am posting this here, since the soil modelling forum is locked. I am trying to conduct a soil column response analysis. The elements have a size of 1m X 1m and the column's width is 2m. The flexible rock halfspace is modelled with a viscous damper, hence the type of loading is a Path Type time ser...

I am sorry if I wasn't clear. I don't want to model the soil, i want to assign 6 springs and 6 dashpots at the base of the pier to take in account Inertial Interaction. I have calculated the springs' stiffness and dashpot coefficients for each dof, using available equations. I then create the Elasti...

Hello, I am trying to model the soil-structure interaction of a bridge with a shallow foundation, using springs and dashpots at its base. I model the springs using the Uniaxialmaterial Elastic and the dashpots using the UniaxialMaterial Viscous. My question is can I use the UniformExcitation pattern...