Hi there, i'm doing a reaearch project regarding sub-marines and such. More or less i'm attempting to see deformations in parts under uniform pressure (water pressure at different depths). The issue i keep having is simulation is pretty hell bent on making set a fixture or bond of some kind. Kind of negates me attempting to see uniform pressure
How should i go about this?
Picture a sphere or a hotdog shaped cylinder that would be pressurized from all external surfaces
Does checking the "Use soft springs to stabilize model" box allow you to do what you want?
I can't say whether or not this setting will adversely affect the accuracy of your simulation results, but it may get it to at least run. I just ran a quick test on a sphere and it threw up a warning about large displacements, but it ran with that setting on. You could also try fixing a very small split in the surface, just to give it something rigid to work around.
Hey thanks for the reply! That did work to run the sim! Although like you had said i don't know how it would affect the accuracy. I more or less made a tube and applied 15,000-psi uniformly to the exterior. FYI this is the pressure at the deepest point in our ocean. According to the simulator my displacement was 6.221e+005 MM. By some math here that equates to almost 2,500 inches.
How about you split your model along a symmetry plane and apply a roller fixture along that plane, then apply pressure to the rest of your exposed face. Should get you closer to a realistic result.
And I would make sure that plane lies parallel to the direction of gravity, so you can take into account depth pressure variation if your object is quite large.
Would this still account for rigidity when there is structural objects? How would solidworks understand how a crossbeam supports the structure if i split it?
Also Solidworks appears to be very very VERY far from accurate unless i am not doing this correctly. When applying my pressures a solid steel ball flattens to a pancake at 15,000psi -_- . That's extremely inaccurate. Anyone have an idea what i could be doing wrong?
I'm simply applying 15,000 psi uniformly to an external surface.
Solved that issue. You NEED to fix a position. Whether its an arbitrary shaft or connector of some kind. It simply just needs to be fixed. With Soft spring on it bounces where-ever you want and ultimately the results are very not correct. Made some little feature that i fixed along my model and it was literally 8 exponents in MM difference in displacement.
Does checking the "Use soft springs to stabilize model" box allow you to do what you want?
I can't say whether or not this setting will adversely affect the accuracy of your simulation results, but it may get it to at least run. I just ran a quick test on a sphere and it threw up a warning about large displacements, but it ran with that setting on. You could also try fixing a very small split in the surface, just to give it something rigid to work around.