USER element : 1D beam custom implementation

During my testing so far of the User element I worked with Prepomax. Just try it.

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great enhancement, many thanks. Perhaps, it could be interesting to introduce basic design module of steel members and displaying result of demand capacity ratio in CGX. This can attract another user contribution to extent for specific code regulation they are familiar.

Dear Xyont,

I have to admit, adding codecheck is on my to do list, as it will open to civil engineering CCX,
I have already created a tool for Freecad (and in the end would like to use it with CCX)
Beam FEM Workbench - FreeCAD Forum

But i am still not fully convinced that it should be par of the CCX code, as:

  • many different code
  • high maintenance
  • need to follow the rules that constantly update & have some national parameters.
  • need to add many properties to item, useless for FEM resolution (Buckling length, stiffener spacing etc…)

It would need an army to cover all, and a second army to check it

Some structural software calculate it at the post processing phase (RFEM for instance), so i would rather make a good interface with SDC verifier for instance, or any equivalent open source UC check soft.

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hi @p.viguier

Indeed, design code is complex enough to implemented so there’s user parameter overwrites for selected members is available usually. It seems needed of separate module in dynamic linked library as Mfront does, may these approach can made a feasible workflow in further of extending and maintained.

An introducing how some design modules interact with database results and displaying in post processing can help much another user for starting to contribute.

best,

another structural analysis programs such as STAAD and GTSTRUDL perform design at input files directly, an example below.

*edited, add

related to 1D beam element itself, a capability to account rigid end joint offset can be useful also.