If your application is similar to a reed valve, I recommend measuring the force vs deflect. FEA is not likely to help much, unless you have small deflections. Also, in measuring and in FEA - make sure your force measurement is perpendicular to the surface (which is rotating in the case of a...
You could lay some fuji paper between your parts to get an understanding of how the contact pressure is distributed. By selecting the appropriate pressure range, you may be able to detect how your parts are deforming do to the compressive stress at the bolts.
Larger bolt flanges will reduce...
I am trying to correctly measure the surface roughness of a part I am developing. I do not have a long length over which I can measure, so I am not sure if I am getting accurate measurements. What I need is a handbook (or something similar) that will explain to me how cutoff length relates to...
Thanks iraelkk.
Assuming constant pressure differential across some arbitrary pipe, is there an equation for the mass flow rate? (Just trying to get a starting point.)
This is not a homework problem; the way I've set this up is intended for clear communication. Part of the actual problem would also disclose proprietary information.
(I graduated in December 2007.)
Suppose there are two closed volumes of gas connected by a small pipe line of area A and length L. The pipe has an L/d (length/diameter) ratio greater than 1 and less than 10. The pipe line has a valve that initially closed. Suppose also that all thermodynamic properties (pressure...
Hello everyone,
I am wondering how surface finishes or surface roughnesses are typically specified for ductile iron shafts. More specifically, I am dealing with bearing surfaces in a forced lubrication system. There will be aluminum rods attached to the ductile iron shaft in a crank-piston...
