Sealed Container under pressure

[DustinMechEng]

I am using Cosmos/Works to analyze the deflection of a sealed container in a pressurized environment. In use, the entire container would be slightly "squeezed" towards it's center of gravity. However, Cosmos requires that I contrain some part of the model in order to create a boundary condition to solve the analysis, but doing so is not an accurate representation of what actually happens during loading. I tried the soft-spring setting but it produced junk results. Any suggestion? Thanks!

 

[hiyer]

If the geometry is symmetric then model 1/2 or 1/4 of the geometry and use symmetry BCs to constrain the model.

 

[DustinMechEng]

Thanks for the suggestion hiyer. Unfortunately, the model is not symmetric.

 

[corus]

The same question is being asked more appropriately in the finite element forum. There's no need to ask it twice as your problem is general to all FE models.

corus