Symmetric Boundary Condition for Pressure Vessel

Hi,

I want to do FEA of Pressure Vessel and tried to use LIAISON_OBLIQUE with no luck. Link to that discussion here www.code-aster.org/forum2/viewtopic.php?pid=41294

Vessel OD = 3000mm
Nozzle OD = 300mm
Vessel and Nozzle thickness = 10mm
Internal Pressure = 0.5MPa
Lateral Force = 9000N

Visual representation is at engineering.moonish.biz/engineering-info...-nozzle-second-pass/

I want to use boundary condition on the two vertical faces of the shell such that Radial displacement of both faces is constant, so that the movement of Shell as shown at engineering.moonish.biz/engineering-info...-nozzle-second-pass/ doesnot happen.

Any help is much appreciated.

Thanks
Dharmit

Hi claws,

I have already tried to analyse it in positive xy quadrant with one face having dx=0 and other having dy=0 with the same result I got for when the nozzle is pointing in +x direction. I want to have a model in which deformation of geometry occurs such that dx+dy displacement for both vertical faces is equal.

Thanks
Dharmit