Recent content by Judge

Thanks a lot everyone. You've just settled an argument. J

Thanks 3DDave. However my question is more about the calculation to get from 120PSI to kg load.

I've got 20 Belleville spring washers arranged in pairs 2up, 2down, 2up, 2down....around 1 pin. To test I compressed the set of springs to half its overall length on a hydraulic press. Got a pressure reading of 120PSI. Spring dimensions are OD=22.5mm, ID=11.2, s=1.25mm, Ho=1.75mm. What load...

Hi designnews. I don't think so. Here is a link to a youtube video which shows the process without UDE constraints. I know it's possible. I've seen it done before including the User defined expression constraints, but can't figure out what I'm missing. Link Thanks J

Hi. I'm trying to create a reusable Object from a sketch which I have constrained using 4 User Defined expressions, but each time the defined expressions & constraints are omitted. [sad] This is what I've tried Tools >> Reuse Library >> Define Reusable Object. Type: 2D Section Folder: 2D Section...

Hi desertfox. I've verified this with the tribology calculator here. http://www.tribology-abc.com/calculators/e3_8.htm p =(1000*δ)/(d*(((d^2+di^2)/(Ei*(d^2-di^2))+((do^2+d^2)/(Eo*(do^2-d^2))-((vi/Ei)-(vo/Eo)))))) The 1000 is so you can use GPa instead of MPa. Changes highlighted in red...

Hi desertfox. Uo, poisson's ratio for the outer member, is listed but is not in the equation. Is that a typo or intentional? Pc=x/[Dc*[((Dc^2+Di^2)/(Ei(Dc^2-Di^2))+((Do^2+Dc^2)/(Eo*(Do^2-Dc^2))-((Ui/Ei)+Ui/Eo))] The second [ should be a ( Thanks J

Hi desertfox. There seems to be a problem with the Pc formula. Uo is missing & it's missing a ] (closing square bracket) J

Many thanks desertfox. I have used the excellent tribology calculator in the past, but was unsure of the formulae used. Great work. Thank you J

Thanks for responding desertfox, but could not find that FAQ. Can you post a link please. Thanks Greg. That's pretty close to what I need. J

I'd really appreciate a little help here. I plan to shrink fit a sleeve into a housing of same material using liquid nitrogen. The housing is stationary, so no torque transmitted, it just has to support the axial load. I am looking for the formulae to calculate. I have found some online...

Thanks a lot BubbaK. I'll check them out. Judge.

Hello. Can anyone suggest a good resource for learning how to create Grips, Journals or Macros in NX8.5. I have never used these features & am keen to learn. If anyone knows any good sites, books or Dummies guides to get me started that would be much appreciated. Thank you Judge

Thank you all for your replies. RobyEngIT. Your formulae worked perfectly. To confirm the results, I drew a constrained sketch in NX. Tried a range of values, & compared the resultant XG value to that in the spreadsheet. Perfect every time. Many thanks. Prex. I revised my sheet with your...

Hello. How can I determine the X distance to the centre of gravity of the area within the red arcs? See attachment. I need formula(e) to put in an excel spreadsheet. Conditions: Circles have different radii. Centre of bigger circle is (0,0). The included angle will always be less than 180...