I'm new to Cosmosworks. I have to analyze a tank design for
strength. It's a simple rectangular tank that sits on three
supports. It will be filled with essentially water. What I need to
verify is that I'm defining the water load correctly. I have the
bottom of the tank restrained as fixed. it will be botled in place.
Then I added a gravity perpendicular to the bottom of the tank.
Last I added a distributed load equal to the mass of the water
inside and selected the bottom and the four walls.
The results of the simulation are bothersome. The bottom deflects
downward as expected. Two walls deflects outward. The other two
wall bulge toward the inside of the tank. The tank is almost square
so I'm at a loss as to why this would happen. It does not seem to
be distributing the pressure fo the water to the side walls.
I assume that a proper pressure load would be the answer?