考虑配合间隙动态变化的陶瓷轴承-主轴系统非线性动力学分析

IF 2.8 3区工程技术 Q2 MECHANICS

International Journal of Non-Linear Mechanics Pub Date : 2025-04-07 DOI:10.1016/j.ijnonlinmec.2025.105104

Liuwang Gao , Ke Zhang , Zhan Wang

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引用次数: 0

摘要

陶瓷电主轴系统（CMSS）由于陶瓷轴承和钢基座的材料特性不同，导致外圈配合游隙和轴承内部接触状况波动不均匀，从而增加了振动和不稳定性。因此，首先建立了五自由度外圈游隙配合模型，并在轴承准静态模型中考虑了内部游隙的动态变化，最终建立了 CMSS 动力学模型。该模型考虑了滚道-滚珠接触和外圈-基座接触引起的非线性因素，并详细讨论了热变形和过盈配合对轴承外圈配合游隙和内部游隙引起的非线性变化。分析了转速、外圈配合间隙和内部游隙对 CMSS 振动特性和稳定性的影响。最后，通过 CMSS 测试平台对温度和振动实验进行了验证。结果表明，热变形会增加 CMSS 的非线性激励。外环配合间隙的增大会增加 CMSS 的外部激励，但不会使系统进入混沌运动，而内部间隙对 CMSS 运动状态的影响更为明显，外部间隙的增大会缩短周期运动中内部间隙的范围。

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Nonlinear dynamic analysis of ceramic bearing-spindle system considering fit clearance dynamic variations

The CMSS (ceramic motorized spindles system) has increased vibration and instability due to non-uniform fluctuations in the outer ring fit clearance and bearing internal contact condition caused by the different material characteristics of ceramic bearings and steel pedestals. Therefore, a five-degree-freedom outer ring clearance fit model is firstly established, and the dynamic variations of the internal clearance are considered in the bearing quasi-static model, finally the CMSS dynamics model is established. The nonlinear factors caused by raceway-ball contact and outer ring-pedestal contact is considered in this model, and the nonlinear variations caused by thermal deformation and interference fit on outer ring fit clearance and internal clearance of bearing are discussed in detail. The effects of rotation speed, outer ring fit clearance and internal clearance on vibration characteristics and stability of CMSS are analyzed. Finally, the temperature and vibration experiments are verified by the CMSS test platform. The results indicate that thermal deformation increases the nonlinear excitation of the CMSS. The increase in outer ring fit clearance will increase the external excitation of the CMSS but will not make the system enter chaotic motion, whereas the effect of internal clearance on the CMSS motion state is more obvious, and the increase of external clearance will shorten the range of internal clearance in periodic motion.

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来源期刊

International Journal of Non-Linear Mechanics 物理-力学

CiteScore

5.50

自引率

9.40%

发文量

192

审稿时长

67 days

期刊介绍： The International Journal of Non-Linear Mechanics provides a specific medium for dissemination of high-quality research results in the various areas of theoretical, applied, and experimental mechanics of solids, fluids, structures, and systems where the phenomena are inherently non-linear. The journal brings together original results in non-linear problems in elasticity, plasticity, dynamics, vibrations, wave-propagation, rheology, fluid-structure interaction systems, stability, biomechanics, micro- and nano-structures, materials, metamaterials, and in other diverse areas. Papers may be analytical, computational or experimental in nature. Treatments of non-linear differential equations wherein solutions and properties of solutions are emphasized but physical aspects are not adequately relevant, will not be considered for possible publication. Both deterministic and stochastic approaches are fostered. Contributions pertaining to both established and emerging fields are encouraged.