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xxjoeyxxeb		 Help with designing a tube with threaded ends View All
Hey guys,
I'm a student with only 1 quarter of Design under my belt, and have a big project for an internship. I'm trying to design a chromoly 4130 tube with threaded ends to thread in a bung. The tube has to withstand 6000 lbs of compression, and be 18.45 inches long. I tried using Euler and J.B. Johnson equations for buckling, but in class we only designed for a rod with diameter D, but now I have D-d since it is a tube. I assumed a common control arm size of 1.5" D and found a wall thickness of about .120. Did I do that part correct?
The main question if how to determine what thread specifications will be good for the resulting dimensions on the tube to withstand the force and not break the tube under tension when the material is removed by a tap. The bung being threaded is 12L14 which has a lower Sy than the chromoly. Any hints, leads, links will help a ton!
Thank you,
Joe
1 month ago - 10 months left to answer. - 0 responses - Report Abuse
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