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Ansys Learning Forum › Forums › Discuss Simulation › General Mechanical › Hydrostatic Load Application Ansys › Reply To: Hydrostatic Load Application Ansys

September 21, 2022 at 11:14 pm
peteroznewman
Subscriber

I show a Hydrostatic load on the lower half.

If the tank walls are exposed to atmospheric pressure inside and out, then there is no net force on the walls and the stress from the hydrostatic pressure is correct.

If the tank is closed and can be pressurized, then all the interior walls would get the same pressure and that would be in addition to the hydrostatic pressure.  This will increase the stress.

So you can have a 2 step solution and have just the hydrostatic pressure for step 1 to show the unpressurized tank stress. You would have a pressure load, but just set the pressure to 0 in step 1. Then in step 2 you can use a nonzero pressure and see how much the stress increases.