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so, is there any way (other than Multi Support Excitation) I can only apply ground acceleration to the support of a 3D structural model just like in practical condition.

Hello, I have modelled a rectangular column element with fiber section (column height is 2m) and 'forceBeamColumn' element (shown below). At the time of dynamic analysis it shows error mentioned below but i have analysed same model with 'elasticBeamColumn' element it runs smoothly without any error....

Hello, I am trying to analyze a frame model with foundation at different level or height (i.e., foundations are on a slope) with 'Uniform Excitation Pattern'. Is it applying same ground motion to the foundation irrespective of their location or height (i.e., as same as frames on a plane ground or fo...

Thank you..

Hello, I'm trying to record acceleration, velocity, and displacement data for nodes. what value will be recorded for acceleration, velocity and displacement if ground motion is applied by 'UniformExcitation' command ?? :?: :?: what I mean is, will the values be the relative values or absolute values...

According to the OpenSees documentation 'Kinit' is the slope between Friction Coefficient (i.e., Mu) and displacement of the slider (i.e., dy/dz). Is it actual K (stiffness) of the slider or the different parameter of slider? what is actually 'Kinit' and how this parameter works? can anyone help it'...

Hello, I'm trying to model Friction damper with Flat Slider Bearing element. For Stick-Slip model of friction damper 'Kinit' should be ideally infinite. But for much higher value ( 1.0e15) it's showing numerical instability. Can anyone help me with the 'Kinit' value for Flat Slider Bearing element w...

I want to model Flexible diaphragm frame building. Can anyone help me about what type of materials, elements and joint connections are suitable for modeling of Flexible diaphragm.

Thank You.

I'm modeling a simple 3D frame using 2 different approaches for slab or diaphragm. In Rigid Diaphragm case time period is 0.07073167481663893 where as in Flexible Diaphragm case time period is 0.05693672810516015. My under standing is that for Rigid Diaphragm I should gate lower time period compare ...

I have copied above written script and run it. But all the result is showing Zero. Can you check it again please and if you got any result other than zero please upload that result too. Thank you.

Yes nodal load is working properly but element load is not working. Actually elemental load is not working with any of nonlinear type of element.

wipe wipe all model BasicBuilder -ndm 3 -ndf 6; # Create Nodes # Command: node $nodeTag $X $Y $Z node 1 0 0 0; node 2 5 0 0; node 3 0 0 5; node 4 5 0 5; node 5 0 4 0; node 6 5 4 0; node 7 0 4 5; node 8 5 4 5; # Fixing base nodes fix 1 1 1 1 1 1 1; fix 2 1 1 1 1 1 1; fix 3 1 1 1 1 1 1; fix 4 1 1 1 1 ...