Asymmetrical cold-formed angle cantilever beam lateral buckling
Asymmetrical cold-formed angle cantilever beam lateral buckling
(OP)
Hi all,
I'm having some specific problem with lateral buckling. I have a asymmetrical cold-formed "uneven angle" cantilever bar. The section and the system is shown here.
The EuroCode gives methods for doubly symmetrical sections, so, I can't use them. There are some SN guides for cantilevers and channel bars.
The ideas I'm considering:
Thank you in forward!
Live long and prosper!
I'm having some specific problem with lateral buckling. I have a asymmetrical cold-formed "uneven angle" cantilever bar. The section and the system is shown here.
The EuroCode gives methods for doubly symmetrical sections, so, I can't use them. There are some SN guides for cantilevers and channel bars.
The ideas I'm considering:
- The angle between the "neutral" and principal axis is small α=6°, hence, try and work with the SN guides for channel - mono symmetric section...
- The only thing I can think of is to make a FEM out of shell elements using Autodesk Robot and get the Mcr. I have an idea how to model it, but I have no idea how to be sure I reached Mcr?
Thank you in forward!
Live long and prosper!






RE: Asymmetrical cold-formed angle cantilever beam lateral buckling
The idea of using them as such is so fluorescently bad that no one who could possibly be the target of legal action will knowingly encourage or facilitate your folly.
Mike Halloran
Pembroke Pines, FL, USA
RE: Asymmetrical cold-formed angle cantilever beam lateral buckling
Live long and prosper!
RE: Asymmetrical cold-formed angle cantilever beam lateral buckling
Mike Halloran
Pembroke Pines, FL, USA
RE: Asymmetrical cold-formed angle cantilever beam lateral buckling
It's specifically designed to deal with rolled sections, and gave credible results on a real world problem.
I don't recall it being particularly hard to learn and use, and it didn't crash, which these days is a huge accolade.
Mike Halloran
Pembroke Pines, FL, USA
RE: Asymmetrical cold-formed angle cantilever beam lateral buckling
RE: Asymmetrical cold-formed angle cantilever beam lateral buckling
- Thimoshenko uneaqual leg angle bar critical moment
- Steel structures report cirtical moment
- Eurocode provisions for obtaining critical moment for monosymmetric sections
From there I calculated slenderness. All calculations have shown similar slenderness. BC the cantilever was short and had lateral supports, the LTB had no significant influence on the stability overall.Live long and prosper!
RE: Asymmetrical cold-formed angle cantilever beam lateral buckling
The program CFS could then likely calculate this for you and would be cheaper than hand calcs by the time you are done.