| Citation: | XU Endian, XU Tengfei, YANG Lihua, et al. Contact load analysis of the duplex angular contact ball bearings with local defects[J]. Journal of Aerospace Power, 2024, 39（9）：20220443 doi: 10.13224/j.cnki.jasp.20220443
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A quasi-static mechanical model of the duplex angular contact ball bearings (DACBBs) with local defects on the outer raceway was established. The defect depth, circumferential extent and the time-varying characteristic of the bearing were considered. On this basis, the influences of the size and location of local defects on the internal contact load of DACBBs were systematically investigated under pure radial and combined loads. The results showed that the contact load was very sensitive to the local defect. When the left or the right row contained defect or both of them had defects, the load distribution of the two rows was quite different. The load distribution of the row with defect produced a local mutation, and the amplitude and width of the mutation increased with the increase in the defect size. However, the mutation of the other row without defects was very small. In addition, the DACBBs should be considered as a whole for research and analysis. Under different arrangements, the impact of defects was also quite different. The current study has important implications for revealing the failure mechanism, reliability analysis and design of DACBBs.
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