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You have 5 locations and only two weights. The number of inputs for locations, weights and secTags must be the same. That's how I have used that command in the past. There is a pdf that weights 5 integration points for you on the forcebeamcolumn page

Hi,

I was trying to update my opensees with the new tcl, but when you install it there is no option to change the directory folder to Program files\tcl. Has anyone worked around this or knows how to ?

Thanks

Hi ismailqeshta, Have you compared these to say concrete02, because when I switch materials my periods increase greatly to unrealistic values. Even the examples of FRPconfinedconcrete do not run properly. Do you have this problem? I also have problems with ConfinedConcrete01, where the period increa...

Hi, I am attempting to do a pushover analysis of a single bay, two storey tall RC structure. I will do this as a bare structure and with FRP confinement. My pushover for the bare frame is good, but I am struggling with the FRP confinement. There are numerous materials available (confinedconcrete01, ...

Just an update that may help people who can solve this: I have run the dynamic analysis for a single column, then two columns (no beam between them) and its runs fine. As soon as I add a beam between the two I get issues with the analysis not wanting to run.

Thank you all for your replies. I am almost at a loss with how to progress with this. I have tried everything I can think of. I have managed to get certain numberers to work, but when I get to higher strength earthquake the dynamic analysis simply doesn't continue. It doesn't give any convergence er...

Thanks for your reply. Yes, I am using the nonlinearBeamColumn element. From some testing, I noticed that using a column with one node between beams results in no issues. When i add an additional node (IE the column is now split into 3 elements), i get errors with the Plain and RCM numberer no longe...

Hi, I am modelling a two-storey RC frame to undertake some dynamic analysis. My standard frame runs perfectly for my dynamic loading. It is a simple one bay structure. To develop my analysis I am attempting to strengthen the structure using confinement of the concrete. This occurs at 1/4 length of t...

Hi, I am trying to model FRP sheets bonded to the external faces of FRP columns to undertake dynamic analysis of the structure. I have constructed my model using fibres and everything appears to be working fine with my time history analysis. Currently I have the external FRP jackets as a concrete ma...

Hi, I am fairly new to OpenSees but have constructed a 3D, single bay, two storey RC frame. The frame is based off an example frame I was given. This simple frame had 4 nodes at ground floor, first floor and second floor but I have adjusted this as eventually I will placing external reinforcement on...