油膜轴承巴氏合金ZChSnSb11-6衬套的蠕变寿命评估

发布时间：2019-04-27 03:49

【摘要】：针对油膜轴承使用过程中巴氏合金ZChSnSb11-6衬套的蠕变损伤问题,设计了蠕变试验设备并对ZChSnSb11-6进行了蠕变试验.利用试验数据分别建立了基于Dom理论和恒速理论的2个稳态蠕变本构方程,通过试验验证了基于Dom理论的稳态蠕变本构方程的计算精度较高,其相对误差为1.52%;同时,基于ZChSnSb11-6的稳态蠕变本构方程建立了油膜轴承ZChSnSb11-6的蠕变寿命计算模型,以预测任意工况下轴承的使用寿命;测量了ZChSnSb11-6蠕变后的电阻率和硬度,分析了两者的关系并建立了基于电阻率的ZChSnSb11-6蠕变寿命评估模型,提出了一种通过测量合金电阻率评估轴承使用寿命的方法.
[Abstract]:Aiming at the creep damage of ZChSnSb11-6 bushing in oil film bearing, the creep test equipment was designed and the creep test of ZChSnSb11-6 was carried out. Based on the experimental data, two steady-state creep constitutive equations based on Dom theory and constant velocity theory are established respectively. The experimental results show that the steady-state creep constitutive equation based on Dom theory has high calculation accuracy, and its relative error is 1.52%. At the same time, based on the steady-state creep constitutive equation of ZChSnSb11-6, the creep life calculation model of oil film bearing ZChSnSb11-6 is established to predict the service life of oil film bearing under any operating conditions. The resistivity and hardness after creep of ZChSnSb11-6 are measured, the relationship between them is analyzed, and the ZChSnSb11-6 creep life assessment model based on resistivity is established. A method for evaluating bearing service life by measuring resistivity of alloy is proposed.
【作者单位】：太原科技大学重型机械教育部工程研究中心;
【基金】：国家自然科学基金(51205269) 山西省基础研究计划(2012011018-2) 山西省回国留学人员科研基金(2013-093)资助项目
【分类号】：TG115.5

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