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本文的目的是通过二个φ450试验轴承(双侧供油、上瓦不开槽、沟的椭圆轴承和三油楔轴承)的静、动特性计算,把计算结果与全尺寸大型滑动轴承试验台上得出的实测值进行比较分析,讨论了紊流因子对计算性能的影响.特别分析了影响动力特性计算结果的几个主要因素.从而解释了在理论依据基本一致的前提下,造成动特性计算结果差异的原因.我们认为,在紊流状态下,动特性系数的计算迭代是影响失稳转速理论值的主要因素,而紊流因子的差异并不是造成失稳转速具有不同计算值的真正原因.在上述基础上,提出在产品设计中以轴承动特性裕度较大为目标的紊流因子选择和计算过程中应完成的迭代要求.
The purpose of this paper is to calculate the static and dynamic characteristics of two φ450 test bearings (double-sided oil supply, no groove on the tile, oval bearing in the groove and three oil wedge bearings), and compare the calculation results with the full-scale large-scale plain bearing test bench And the influence of the turbulence factor on the calculation performance is discussed.Major factors affecting the calculation results of the dynamic characteristics are analyzed in particular.It is explained that on the premise that the theoretical basis is basically the same, The reason for the difference in the calculated results is that we consider that the calculation of the dynamic characteristic coefficient is the main factor affecting the theoretical value of the buckling speed under the condition of turbulent flow and the difference of the turbulence factor is not the true value with different calculated values of the buckling speed On the basis of the above, the paper puts forward the choice of turbulence factors and the iterative requirements in the process of calculation, which aim at the large margin of bearing dynamic characteristics in product design.