Aerodynamic Pressure Load

[ThoRig]

Community,

Is it possible to apply an aerodynamic pressure load to a cylinder in Creo Simulate 10.0.  The load needs to be applied to one half of the cylinder and in the same direction, not normal to the surface.  Trying to achieve the pressure direction in the attached image that shows "Need this", except arrows pointing down from the top or outside of the curved surface.  Thanks in advanced.

[skunks]

here are 2 options

[ThoRig]

Thanks for the file.  However, that did not address what I was attempting, but close.  I am looking for pressure not force.  I tried the interpolation technique for pressure, but the pressure is still normal to the surface.  It will work for force.  The below image shows force vs pressure when using the same interpolation technique.  I am attempting this for a project, and I saw that it can be done in ANSYS, for pressure.  I have not tried it using (fx).  In the image of two cylinders, I am trying to get the pressure distribution to look like the force distribution.  The image on the left can be obtained by just splitting the surface and interpolation is not needed.

[KenFarley]

Perhaps I'm misunderstanding, but pressure has a magnitude, but not a direction. It is a scalar quantity, not a vector quantity. The resultant force on the surface of the part is in the direction of the normal to the surface, not an arbitrary one.

[ThoRig]

You can apply a pressure as a "Force Per Unit Area" in one direction, and it will display the arrows in one direction as shown in the previous post image "FORCE = Load 1".  This is now a pressure....right?

[KenFarley]

I'd consider that a distributed load. Similar to if you were trying to add a load to represent a car parked on a platform, or something like that. Or a heavy machine that sits on pads, etc.

[ThoRig]

When you apply the load or look at the preview, all the arrows act in one direction, not normal to the curved surface.

[KenFarley]

That's because it is not a pressure, but as I stated, a distributed load. They have the same units of measure but are completely different in what they are representing, and in the effect they will have on an analysis.

[ThoRig]

I built a test model to see what really is the load that is entered.  I entered a negative 10 (negative z direction) over the area of 4.712 in^2.  The resultant load is 47.12 lb.  This means that the value entered for "force" is actually psi.  The load arrows appear to act in one direction over the curved surface area, or this is a misrepresentation of the load direction.  Is it possible that the software is reading the 4.712 in^2 as flat when it is actually curved?

Area on half of cylinder

Load

Resultant

[ThoRig · Accepted solution]

Based upon the Help Center, it is not possible to produce a distribution other than normal to the surface.