ISSN   1004-0595

CN  62-1095/O4

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杨笑, 孟祥铠, 彭旭东, 王玉明. 表面织构化机械密封热弹流润滑性能分析[J]. 摩擦学学报, 2018, 38(2): 204-212. DOI: 10.16078/j.tribology.2018.02.011
引用本文: 杨笑, 孟祥铠, 彭旭东, 王玉明. 表面织构化机械密封热弹流润滑性能分析[J]. 摩擦学学报, 2018, 38(2): 204-212. DOI: 10.16078/j.tribology.2018.02.011
YANG Xiao, MENG Xiangkai, PENG Xudong, WANG Yuming. A TEHD Lubrication Analysis of Surface Textured Mechanical Seals[J]. TRIBOLOGY, 2018, 38(2): 204-212. DOI: 10.16078/j.tribology.2018.02.011
Citation: YANG Xiao, MENG Xiangkai, PENG Xudong, WANG Yuming. A TEHD Lubrication Analysis of Surface Textured Mechanical Seals[J]. TRIBOLOGY, 2018, 38(2): 204-212. DOI: 10.16078/j.tribology.2018.02.011

表面织构化机械密封热弹流润滑性能分析

A TEHD Lubrication Analysis of Surface Textured Mechanical Seals

  • 摘要: 综合考虑密封端面间的粗糙表面接触、热弹性变形和黏温效应,结合JFO空化条件,建立了混合润滑状态下织构化端面机械密封的热弹流润滑(TEHD)理论分析模型. 在航空泵用机械密封的操作工况范围内,应用有限单元法数值分析了圆形、方形和三角形等几种典型表面织构机械密封在稳定状态下的端面液膜压力、膜厚和膜温分布,以及对密封性能参数的影响规律. 结果表明:表面织构对端面压力和温度分布影响很大;端面开三角形织构2的机械密封能获得最大的液膜承载比、最小摩擦系数、最高液膜刚度,在低压下能满足泄漏要求,因此性能最优.

     

    Abstract: A mixed-TEHD (thermal-elasto-hydrodynamic) model was developed to study the surface textured mechanical seal. The model consisted of JFO cavitation, surface roughness and asperity contact, thermal-elastic deformations, temperature and viscosity variations. Finite element method was adopted to analyze the liquid film pressure, the film thickness and the film temperature distribution in several typical surface texture (e.g. circles, squares, and triangles) for studying the effect of texture shape on sealing performance parameter in the steady state during the operation of aviation pumps. The results show that the surface texture had pronounced influence on the surface temperature and pressure distribution. Mechanical seal with triangular 2 texture had maximum film load carrying capacity, minimum viscous friction coefficient, maximum film stiffness and leakage lower than the requirements at low pressure, hence the performance was optimal.

     

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