Judder effect in bearings
Judder effect in bearings
(OP)
Hello everybody!
Anybody know where can I find informations about "Judder" effect (factors of influence, methods of reduction/elimination)?
Thanks a lot in advance!
Anybody know where can I find informations about "Judder" effect (factors of influence, methods of reduction/elimination)?
Thanks a lot in advance!





RE: Judder effect in bearings
AHR International Ltd
http://www.ahrinternational.com
RE: Judder effect in bearings
RE: Judder effect in bearings
You probably know about the following:
It seems to me the principle is outlined fairly well.
http://www-personal.engin.umich.edu/~jbarber/backgnd.html
In the HotSpotter, a finite element method is developed for determining the critical sliding speed for TEI of an axisymmetric clutch or brake. Linear perturbations on the constant speed solution are sought that vary sinusoidally in the circumferential direction and grow exponentially in time. These factors cancel in the governing thermoelastic and heat conduction equations, leading to a linear eigenvalue problem on the two-dimensional cross-sectional domain for the exponential growth rate for each Fourier wave number. The Fourier reduction method developed in HotSpotter permits a remarkably efficient solution of the frictional thermoelastic stability problem for systems in which the geometry is axisymmetric. The power of the method is demonstrated by the multidisk clutch example, direct numerical simulation of which would represent an extremely challenging computational problem. Values are obtained for the critical sliding or rotational speed and also for the exponential growth rate of each mode when operating above the critical speed. The method is easily applied to other examples and can therefore be used to assess the effect of design modifications such as changes in geometry and material properties on the thermoelastic stability of multidisk brakes and clutches.
RE: Judder effect in bearings