[python] Re: pivot again





On 24 apr 2006, at 18.49, Jürgen Mages wrote:

Can someone explain the relationship between the distance between the
bearings/bushings in a pivot and the amount of radial load it can take? 

Jürgen Maier once explained this to me, but I can hardly recall it.
Instead I use a framework calculating program like fachwerk.java

http://fachwerk.berlios.de/index.html

which gives me the loads (see attachment). If you can give me
the coordinates I can calculate the loads for you.


Thanks Jürgen. It would be interesting to see how an increasing pivot length changes the tensile and compressing forces. Perhaps you could run a series of four calculations based on 2kN load at the pivot with CG ratio 60/40 (member length as in your attachment) and then make the pivot 10, 20, 30 and 40 cm long.

I am aware that nylon bushings may not give much life time compared to more solid bearing solutions but if one could get a simple pivot that also is light - replacing bushings now and then would be something I could live with.


Olaf

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