dear IRstuff
thank you for your reply.This problem is not new , but in commissioning times and about one year after that,we did not notice such problem.we have talked to manufacturer of spindles and its supports.they asked us to check conditions of bearings of cardan joints , middle supporting...
high everybody
i work in a wide plate mill plant.our mill stand drive
system is equipped with two big "joint shaft spindles,each 51ton weight and 10700mm length.they have 2 huge spindle supports(see attached drawing). Recently,during routine inspections ,we found that the mill spindles are...
hi everyone
i have seen the famous relation for thickness of straight pipe with internal pressure , in ASME B31.3 . is there any analytic formula to calculate the required thickness for fittings like tee or elbows?
BrianE22 , for one (cardan) joint you are right .sinusoidal rotation speed and moment on "joint shaft" is normal operation.i think the variable moment on joint shaft is "torsional moment" not "bending moment".so the bending problem is remained.
you can find the exact equation of motion of cardan...
Thank you,desertfox
Yes our cardan shafts are hollow(dia.170 x tick.12mm)but i think buckling take place in compression members or where there is compressing force .The picture in the link you addressed,f-18
engine shaft,it seems that the shaft is only twisted,because in bucking members there is...
hi everyone
in our plant(wide plate mill)we have a leveling machine to flat the steel plates that have small waves.it has 11 rolls,5in a top cassette and 6 in bottom that are connected to the drive system-electromotor,gear unit&pinion- via 11 cardan shaft spindles.cardan shafts are equipped...
hi
i have modeled a "lifting log" as a plate(25mm tick.) with a 50mm hole in it for wire rope, what is the best method of loading to simulate the force exerted from rope to the hole in their contact area? if i want to use pressure loading ,how i should "select" the contact area of wire rope and...
