Point load on pipe wall exterior
Point load on pipe wall exterior
(OP)
By what method could a radial load on a pipe, towards the pipe center, be modeled to determine stress in the pipe? Specifically, this is in a jib crane using cam rollers on the pipe as the support for the jib.






RE: Point load on pipe wall exterior
RE: Point load on pipe wall exterior
I do know what a jib crane is. But, only you know ' Specifically' what you are looking at. Imagine the number of different arrangement drawings that could be made meeting your description. They say a picture is worth a thousand words, and you are 959 words short, or one sketch short.
What is the pipe dia. and its wall thickness? What size and how many cam rollers, and at what loads? I suspect bearing stress (Hertz stress) and wear btwn. the cam roller and the pipe and alignment btwn. them may be as big an issue as some general point loading stress, once other details are given due attention. You may want a stiffener ring on the pipe at this location and a hardened running surface or bar/track. Timoshenko and Roark will likely have something that addresses your exact question, the problem will be the boundary conditions for your problem, as Ishvaaag suggests.
RE: Point load on pipe wall exterior
RE: Point load on pipe wall exterior
RE: Point load on pipe wall exterior
6" sch 80 pipe (.430 wall). (2) cam rollers, 1 1/4" diameter x 3/4" length mounted at 90 degree separation along pipe circumerence. Max load per roller of 2,600 lb towards pipe center. Rollers are 20" below the top of pipe (nearest gusseted end of pipe).
RE: Point load on pipe wall exterior
RE: Point load on pipe wall exterior