corrugated steel wall/beam

[vato]

I can't believe that I am in "new" territory, but I have not had any luck finding guidance yet. I am attempting to analyze a shipping container wall with openings. I first built a simple truss model of the wall but the results seem very conservative compared to what has actually been built. I also tried a 1/16" flat plate meshed at 6" square. The results improved dramatically, but now I'm pushing the edge of my understanding of plate buckling so I am not confident in the results. I am resisting the construction of a full blown corrugated wall with openings for now. We do plan on load testing and developing an fem model based on these results, but that is in the future. For now, I need to build a simple model if possible, to analyze many different openings and loading configurations. It needs to be less conservative than my truss analogy. Any tips or direction to the correct literature would be appreciated.
thanks to all

 

[GBor]

What software are you using? Is it capable of doing beam-stiffened plates? (Mixed element models)

A corrogated model shouldn't be too hard, depending on your software. I would think you draw the cross section, copy in multiple time down the face and connect the elements either automatically (if the software can do this) or manually...

 

[vato]

I'm using risa3d. It's not the building of the model so much as the interpretation of the results. I have nothing to compare the results with as a check. It seems like there would be something out there by now.

 

[GBor]

RISA has been around too long for there not to be some verification examples running around. For that matter, you can probably find examples from other FEA packages that approximately your structure. You can run them as closely as possible and then extrapolate the comparison to your particular application...