Nonlinear Dynamic Characteristics of Deep Groove Ball Bearings with an Improved Contact Model

Statistical Investigation of the Fatigue Life of Deep-Groove Ball Bearings

Fatigue is an important factor in determining the service life of ball bearings. Bearing manufacturers are therefore constantly engaged in fatigue-testing operations in order to obtain information relating fatigue life to load and other factors. Several of the larger manufacturers have recently pooled their test data in a cooperative effort to set up uniform and standardized ball-bearing applic...

Radial Ball Bearings with Angular Contact in Machine Tools

A Nonlinear Dynamic Model With Confidence Bounds for Hydrodynamic Bearings

In conventional rotordynamic modeling, hydrodynamic bearings are often characterized by a set of linear stiffness and damping coefficients obtained from a first-order Taylor series expansion of bearing reactions. Theoretically, these coefficients are only valid for small amplitude motion about an equilibrium position. In this paper, a nonlinear dynamic model that overcomes the small amplitude a...

Analytical and Experimental Characterization of Ball-groove Contact Problems

Ball-groove contact problems are often encountered in machine design. The analytical modeling of the resulting stress-strain behavior is however difficult, as it implies the necessity to deal with the non-linear Hertzian theory of point contacts. This work addresses the limits of applicability of the available analytical approaches for the calculation of ball-V groove couplings employed in ultr...

Nonlinear vibration signature analysis of a rotor supported ball bearings

The dynamic behaviour of a high speed balanced rotor supported on deep groove ball bearings (SKF-6205) has been studied by numerically simulated results. Since, internal radial clearance (IRC) is inevitably present in all class and types of bearing, in this paper it (IRC-C3) is considered as main source of nonlinearity with speed as control parameter. The complex mathematical model simulates no...