hydrostatic pressure question

[simonRD9L4]

Hello,

I'm just starting out using fusion 360, mainly for designing water vessels but also for producing g-code. 

I'm currently playing with the hydrostatic pressure feature to find any deflection in water tanks, however I've noticed I get two completely different results depending on where the tank is located on the Z axes.  for example o f cylinder tank will have 0.24mm of displacement at 0. Z axes but  0.05 at 1000mm Z axes.  This is will everything set up the same.  

Any advice would be welcome.

[TheCADWhisperer]

Can you File>Export your *.f3d files to your local drive and then Attach it here to a Reply?

[simonRD9L4]

Hello,

Thanks for you reply, i've attached the file (different to the screenshot).  If I complete the hydrostatic pressure test at coordinates it's saved in I get around 1mm of displacement, if I then move it to 0,0,0 I get 43mm.  Any advice would be welcome. 

[TheCADWhisperer]

I do not see a Timeline History in your file?

I do see interferences between 5 bodies.