1/2 loading for 1/2 model in ansys?

[YuJie_PV]

hi experts,
I'm working on a finite element analysis (FEA) of a pressure vessel, and I’m using a 1/2 model for the vessel and the nozzle. In this setup, should the forces and moments applied to the nozzle be considered as half of the complete loading, assuming the loading is symmetric? Any advice or insights on how to properly scale the loads in this scenario would be greatly appreciated!

 

[SWComposites]

seems like you would be applying internal pressure loads.
can you show the actual applied loads on the entire vessel.
probably don't scale the loads, but apply that loads that are on the half that is modelled.
but the boundary conditions at the symmetric plane can be complicated. might be easier to model the entire vessel.

 

[IdanPV]

Looks like the PTB-3 example to me.
Why don't you use 2D simplification?

 

[ThomasH]

If everything is symmetrical just apply the full load on the half vessel that you have modelled. But if you use symmetri you wall also automatically ignore certain effects that may be relevant. Like certanin buckling modes, if buckling is relevant.

 

[Denial]

If EVERYTHING is fully axisymmetric, as looks to be the case, why not simplify further and model only a 90° slice? Or, if your FE software allows it, you could follow IdanPV's suggestion and reduce it to a sort-of two dimensional axisymmetric problem. (But note ThomasH's warning about any buckling analyses.)