| Citation: | LIU Yanbin, HUANG Jie, LI Xuying. Research on dynamics of cylindrical roller bearing with circular pockets considering conformal contact[J]. Journal of Aerospace Power, 2024, 39（4）：20230288 doi: 10.13224/j.cnki.jasp.20230288
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For the conformal contact pairs such as the roller-circular surface of the pocket, the roller-end face of the pocket, and the roller-rib with highly close contact profiles, based on the Winkler's elastic foundation model, a conformal contact modeling method was proposed; by combining the conformal contact modeling method with the Newton-Euler's dynamics theory, the six degree-of-freedom dynamics modeling method of the bearing with circular pockets considering conformal contact was proposed; and by comparing with both the reference results and the experiment data, the proposed dynamics modeling method was validated. On this basis, influences of both the mass eccentricity of the cage and the angle misalignment of the inner and outer rings on the cage slip/whirl, the roller slip/skew/tilt, the roller-cage collision and the roller-rib collision were studied by use of dynamics simulation. The results showed that the radial mass eccentricity of the cage could aggravate the cage slip and the roller slip, but contributed to improve the cage whirl stability, and the axial mass eccentricity may cause the roller skew/tilt; when the axial mass eccentricity was combined with the radial mass eccentricity, the roller-pocket peripheral collision and the roller-rib peripheral collision easily appeared. Secondly, the angle misalignment of the inner and outer rings was more likely to cause the roller skew/tilt, and the roller-pocket peripheral collision and the roller-rib peripheral collision, but it can significantly reduce the cage slip and the roller slip.
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