Solution and analysis of VL combined seal lubrication model under the effect of wear

• Published in: Journal of mechanical science and technology Vol. 36; no. 11; pp. 5599 - 5609
• Main Authors: Zhang, Yi, Xiong, Siyang, Zhong, Sipeng, Xiong, Zijie, Yang, Qiang
• Format: Journal Article
• Language: English
• Published: Seoul Korean Society of Mechanical Engineers 01.11.2022; Springer Nature B.V
• Subjects: Contact pressure; Control; Deformation effects; Dynamical Systems; Elastic deformation; Engineering; Film thickness; Finite difference method; Industrial and Production Engineering; Influence coefficient; Lubricating oils; Mathematical analysis; Mathematical models; Matrix methods; Mechanical Engineering; Original Article; Pressure distribution; Surface roughness; Vibration; Wear; Viscosity; Oil film pressure and thickness; Linear velocity; Wear; Roughness
• ISSN: 1738-494X; 1976-3824
• DOI: 10.1007/s12206-022-1023-8

Through the finite element calculation of VL combined seal models under different wear conditions, contact pressure distributions of models are obtained. Considering the coupling effect between seal deformation and lubricating oil film, a mathematical model of elastohydrodynamic lubrication for VL combined seal is established. Based on the theory of small deformation, the elastic deformation of VL composite seal under high pressure is obtained by the deformation influence coefficient matrix method. Considering the influence of sealing surface wear and surface roughness, the oil film thickness distribution and oil film pressure distribution of VL combined seal are solved by the finite difference method. The analysis results show the wear of VL combined seal, the decrease of viscosity, the increase of roughness and rotational speed can raise the thickness and pressure of lubricating oil film. The correctness of numerical simulation is verified by experimentally measuring the friction torque and leakage rate of seal.