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<p>This paper identifies the problem of cage slippage and frictional heat in generation in cylindrical roller bearings for aero-engines, proposing a cylindrical roller bearing with a U-shaped pocket cage and investigating its cage slippage behavior and frictional power consumption. Firstly, based on Hertz contact theory, fluid lubrication theory, and bearing dynamics theory, the rigid-flexible coupled dynamics simulation model of the U-shaped pocket cylindrical roller bearing was established; secondly, the influence of bearing parameters on cage slippage and bearing friction power consumption was analyzed; Based on this, a multi-objective optimization method based on surrogate modeling was proposed. The optimal Latin hypercube sampling method was used for spatial sampling of bearing parameters, and a polynomial surrogate model with slip rate and friction power consumption as objective functions was constructed. Combined with a multi-objective particle swarm optimization algorithm, the bearing parameters were optimized. Finally, experimental analysis was conducted to compare the slip performance and friction power consumption of the optimized bearing with those of the traditional bearing.The findings indicate that the bearings’ parameters substantially impact cage slipping and bearing friction power consumption. Under identical operating conditions, the maximum disparity between cage slipping rate and bearing friction power consumption, corresponding to distinct parameter combinations, reaches 6.58% and 809&#xa0;W, respectively. It is demonstrated that when the roller groove depth is set at 3.25&#xa0;mm, the groove’s depth is 3.02&#xa0;mm, and the elastic modulus is 130.28 GPa, the cage slipping rate and the power consumption of the bearing can be efficiently minimised. The cage slip rate and bearing friction power consumption were compared, and the results showed that, under different working conditions, the optimised bearings exhibited a lower cage slip rate and friction power consumption than traditional bearings.</p>

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Dynamic characteristics and multi-objective optimisation of U-shaped pockets cylindrical roller bearing

  • 期刊论文

  • 发表日期：

    2026年3月30日

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  • Jinbo Ling,
  • Yanbin Liu,
  • Kun Yang,
  • Xuying Li,
  • Wenxin Yan,
  • Ang Bai

摘要

This paper identifies the problem of cage slippage and frictional heat in generation in cylindrical roller bearings for aero-engines, proposing a cylindrical roller bearing with a U-shaped pocket cage and investigating its cage slippage behavior and frictional power consumption. Firstly, based on Hertz contact theory, fluid lubrication theory, and bearing dynamics theory, the rigid-flexible coupled dynamics simulation model of the U-shaped pocket cylindrical roller bearing was established; secondly, the influence of bearing parameters on cage slippage and bearing friction power consumption was analyzed; Based on this, a multi-objective optimization method based on surrogate modeling was proposed. The optimal Latin hypercube sampling method was used for spatial sampling of bearing parameters, and a polynomial surrogate model with slip rate and friction power consumption as objective functions was constructed. Combined with a multi-objective particle swarm optimization algorithm, the bearing parameters were optimized. Finally, experimental analysis was conducted to compare the slip performance and friction power consumption of the optimized bearing with those of the traditional bearing.The findings indicate that the bearings’ parameters substantially impact cage slipping and bearing friction power consumption. Under identical operating conditions, the maximum disparity between cage slipping rate and bearing friction power consumption, corresponding to distinct parameter combinations, reaches 6.58% and 809 W, respectively. It is demonstrated that when the roller groove depth is set at 3.25 mm, the groove’s depth is 3.02 mm, and the elastic modulus is 130.28 GPa, the cage slipping rate and the power consumption of the bearing can be efficiently minimised. The cage slip rate and bearing friction power consumption were compared, and the results showed that, under different working conditions, the optimised bearings exhibited a lower cage slip rate and friction power consumption than traditional bearings.