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针对油膜轴承巴氏合金Sn Sb11Cu6工作过程中发生的蠕变,设计了Sn Sb11Cu6蠕变试验方法并对其进行了蠕变试验,分析了应力、温度、时间、应变和应变率之间的关系,获得了Sn Sb11Cu6的蠕变力学性能,同时基于试验数据对4种蠕变模型进行了对比分析,建立了基于Mc Vetty公式和Dorn公式的Sn Sb11Cu6蠕变模型,其相对误差仅为0.97%,应用ANSYS对蠕变试件进行了数值模拟,在稳态蠕变阶段模拟值与理论计算值的相对误差仅为0.77%。确定了所建立的蠕变模型用于描述Sn Sb11Cu6蠕变特征具有较高的精度,可为油膜轴承巴氏合金Sn Sb11Cu6蠕变寿命的预测提供理论与试验支持。
In view of the creep occurred during the operation of Sn Sb11Cu6, the Sn Sb11Cu6 film was designed and the creep test was carried out. The relationship between stress, The creep mechanical properties of Sn-Sb11Cu6 were obtained. Based on the experimental data, four creep models were compared and analyzed, and the Sn Sb11Cu6 creep model based on Mc Vetty formula and Dorn formula was established. The relative error was only 0.97% ANSYS numerical simulation of creep specimens, the steady-state creep stage simulation and theoretical calculation of the relative error of only 0.77%. The established creep model is used to describe the creep characteristics of Sn-Sb11Cu6 with high precision, which can provide theoretical and experimental support for the prediction of the creep life of Sn-Sb11Cu6 oil-film bearing babbitt.