Recent content by PetieSmo

The relief valve or a backpressure regulator (with sensor for verification) should give you a good level of control and validation.

I admit I don't fully understand what your process is. It sounds like there are two options: 1) Locating the plates before the holes are drilled in Plate 2. If that is the case, this should be no big issue to align the plates, and locate the holes relative to the pattern on Plate 1. 2) If the...

Is the tie-in to the header intended to be a hot tap connection? Or will this be performed during an outage? If a hot tap is required, RT seems your only alternative while the system remains at operating pressures. However, if being performed during an outage or bypass, there may be...

Try http://www.ametekhunterspring.com They have stock springs available

prym, How did you define your contacts? If you defined them surface-to-surface, then i wouldn't expect that message. If you defined your contacts as part-to-part, it's possible that contact definitions were created for other surfaces (e.g., the flat end faces). Seems like you're starting to...

prym, Was on vacation for awhile - sorry i didn't respond sooner. One thing that pops out at me - there is no Z constraint on the outer race or any of the rollers - this could be the source of your constraint issues. Another possible issue - your load condition on the outer race is not truly...

Jim, I thought there was a setting to do this in an AUTOGEM control, but this is not the case. It certainly seems like an "easy" option for PTC to implement/provide for those who need it. The only other ideas I came up with were basically workarounds, similar to what you are already doing...

prym, As with any FEA model, the challenge/trick is to appropriately constrain the model in space without influencing the result. I would suggest you begin with the simple radial bearing (cylindrical rollers), so that you can take advantage of planar symmetry. (You will not be able to use...

prym, What are you trying to accomplish with your analysis? Are you trying to design/optimize the components sizes or materials? Are you trying to model behavior under dynamic loads? Are you trying to get a rough factor of safety or detailed deflections? Knowing your objective may help...

fic, You might try hitting F9 or Ctrl+F9 (which is the 'Calculate' command in Mathcad) Peter

Definitely a wild guess, but when I first opened the picture and thought about the wiper blades, I thought of candy molds (e.g., gum drops). Let us know if/when you find out.

Depending upon the level of protection, you may be able to add a new (duplicate) output of the result you're interested in & modify the decimal places on that. Good luck

Have you applied displacement constraints to the pipe to prevent it from "flying away"? This could be a source of your instability.

This problem will not be accurately modeled with beam equations. The deflection will be heavily dependent upon the tension in the cable. As mintjulep said, this problem is pretty well documented. Because of the force applied at midspan, the cable will not assume a catenary curve.

excognito, Great solution - I was not familiar with live symbolics 'til you showed it in your worksheet. Pete