论文部分内容阅读
为了研究润滑介质、转子和轴瓦之间的相互作用,探讨了一种用于超高速主轴的环槽阶梯滑动轴承系统对摩擦学性能的影响.分析了该轴承系统对受到不同形式外载荷时的瞬态响应特性,采用一种融合计算流体动力学和流固耦合的瞬态分析方法对该轴承系统完整模型进行数值分析,同时采用基于压力的相变条件研究润滑介质的空化现象.对一个润滑速度场可视化实验轴承系统和一个文献中的轴承系统进行分析,实验结果验证了该瞬态耦合分析方法的正确性,通过对环槽阶梯轴承系统从静止启动到稳定运转这一瞬态工作过程进行分析,获得了外载荷的形式和大小、转速及进水压力对轴承系统润滑特性和轴颈轨迹的影响规律.
In order to study the interaction between the lubrication medium, the rotor and the bearing bush, the influence of a ring grooved sliding bearing system used on the ultra-high speed spindle on the tribological performance was analyzed. When the bearing system was subjected to different types of external loads Transient response of the bearing system, a numerical simulation of the complete model of the bearing system is carried out by a transient analysis method integrating computational fluid dynamics and fluid-solid coupling, and the cavitation phenomenon of the lubricating medium is studied based on the phase transition conditions of pressure. The experimental results verify the correctness of the transient coupling analysis method. Through the transient working process of ring grooved bearing system from standstill to stable operation, The influence of the form and size of external load, speed and water pressure on the lubrication characteristics and journal track of the bearing system was obtained.