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I am trying to design a shear pin that will connect two drive shafts. I can calculate the shear stress that will be applied to the pin, however in order to design the pin to fail at a given stress level I have to employ a certain failure criterion. Any suggestions on how to relate the...

I still think that we are dealing with the elastic range. The rod has been plastically deformed slightly, but the axial force applied to the rod string should not be enough to yield the rod - only elastically straighten it somewhat. In other words, when the axial load is removed, the rod should...

There are a lot of ways that we could remove the bend, but this is a theoretical question bound by the fact that the rod is bent and there is an axial load applied.

Sorry, I've been out of the office for the past week. Wow, I never would have thought there would have been so many posts...this is great! You've all come up with some enlightening theories, I wish I could have provided some more detail earlier but here it goes... The application is a...

I have a 25' round steel rod with a diameter of 1.125". This rod is not straight, but rather has a radius of curvature of "p". Does anyone know how to calculate the axial force necessary to straighten the rod? I don't know a formula to determine lateral deflection in a curved beam due to axial...

OK, that makes sense, but how do you measure the preload that you put on the spring before its installed? If have the thing taken apart in pieces and I want to put it back together, how do I know when I have the spring preloaded to XX.X PSI?

I have a Fisher control valve and on the front of the actuator is a table listing "initial spring settings (PSI)" for various valve configurations. What does this mean? Does this mean that the actuator spring has been tightened to the point where it takes that much pressure to start the...

Yeah, that's exactly where I'm getting the calculations from. And those are the values I get for straight pipe. My problem is, I'm a manufacturer of fittings with threaded ends, and I'm trying to give pressure ratings. For the equation Tmin = t + c , the value that I am using for "c" is simply...

Could someone do me a huge favor and verify my calculation of the pressure rating of A106 Gr. B threaded pipe as per ASME B31.3? What I get for threaded 2" STD pipe @ 100F is P=1,122 PSI for threaded 1" STD pipe @ 100F I get P=1,465 PSI Do these numbers sound right? I am second guessing...