calculating contact pressure between a sphere and a cylindrical sleeve
calculating contact pressure between a sphere and a cylindrical sleeve
(OP)
Hello everybody,
I need to design a joint consisting of a steel ball stud able to slide and spin in a plastic sleeve bearing with the same diameter. How does one approximately calculate the contact pressure between the ball and the sleeve? The only examples I found are for the contact between two spheres or two cylinders.
Thank You in advance.
I need to design a joint consisting of a steel ball stud able to slide and spin in a plastic sleeve bearing with the same diameter. How does one approximately calculate the contact pressure between the ball and the sleeve? The only examples I found are for the contact between two spheres or two cylinders.
Thank You in advance.





RE: calculating contact pressure between a sphere and a cylindrical sleeve
RE: calculating contact pressure between a sphere and a cylindrical sleeve
Second question. According to what I read, the contact pressure can easily exceed the yield strenght of the material and that the max safe contact stress is determinet via experiment. Is there a way to roughly approximate the max safe contact stress?
RE: calculating contact pressure between a sphere and a cylindrical sleeve
In your case, the plastic sleeve is likely to be the one taking the bulk of the deflection, and will likely fail first.
RE: calculating contact pressure between a sphere and a cylindrical sleeve
RE: calculating contact pressure between a sphere and a cylindrical sleeve
How do you think will the murtfeld plastic (yield strenght 76 MPa) handle the 144,3 MPa of contact pressure? I will inform you of the results once the prototype of our machine is tested. Can anybody recomend me some easy literature on this matter?