Recent content by Vr6Fidelity

Can anyone help me out on this? I really need a definitive answer.

I thought about this a bit further, and the original pgh formula uses m/sec^2 as the units of g, so dividing this by 9.81 to go back to a unit of "g's" seems like a mistake now. I think pressure = p(w^2)(r^2) should be correct but I would still appreciate input on this! so it comes down...

I have a centrifuge with hydraulic lines on the arm. I need to calculate the pressure that will be developed at the end of the centrifuge arm in the hydraulic lines. The radius of the arm is 3 meters. At the end of the arm the G level will be 100g. Obvioulsy the g level at the center point...

Yeah, It is right. I already submitted the paper and presented it.

Ok I worked on this till 5 am last night. here is what I came up with, let me know if i have gone terribly wrong somewhere. The shaft has variable sections but only one point load in the center (imbalance force). Therefore the moment diagram is a rather simple triangle. Now here is...

How to deal with non uniform cross section bending? How does one approach a solution for bending of a shaft having multiple diameters. I have one particular shaft in mind that has 11 diameters to get to the midpoint. I know the deflection at the midpoint, and I would like to calculate...

anyone?

Ahh, thank you Minger. There is more there than I had before, a lot more. Particularly the graphs. I had assumed radial stress to be at a maximum in the center, and tangential to me at maximum on the OD but it seems more complex than that.

Nothing screws into the holes. The disc actually exists, so I have seen it go faster than the original numbers that resulted from using the ultimate stress.

Stress' in rotating discs. HELP! I am working on an independent project where I am analyzing the maximum possible angular velocity of a solid disc of a given diameter and material. The Diameter is 6.75" Material is 440c E= 29,000 Ksi Density of .275lb/in^3 Ultimate tensile strength...

Interesting. From this thread I was able to deduce I am supposed to be using E the Modulus of Elasticity for the stress, and not the ultimate or yield stress. Although I see Poisson's ratio as a term that did not immediately trigger me to go to "E". should it? Fyi, this 500Mpa stress is...

I believe the real answer lies in the propagation of a Kármán vortex street behind a cylindrical surface in a fluid flow. Said cylindrical surface is the flagpole. The waving action of the flag has nothing to do with the flag, but the pole itself. More information...