The Influence of Characterization of Metallic Gasket Rough Surface on Gas Sealing Performance in Seal Structure

Abstract:

To investigate the influence of the roughness characteristics of the metallic gasket on the gas leakage rate, a mathematical model of a rough surface based on the Gauss distribution function and exponential auto-correlation function was built. According to this model, a 3D geometrical model of a sealing clearance with two rough surfaces was configured. Effect of the roughness parameters on the gas sealing performance was numerical analyzed, and through the comparison with the classical smooth parallel plate leakage model, the relationship between the leakage rate and the roughness parameters of the sealing surfaces was built. Furthermore, the relationship between contact pressure and the leakage rate for the different roughness surfaces was studied based on the current model. The results show the methodology proposed in current work is effective in predicting the actual sealing performance of static seal structure.

• Periodical: Applied Mechanics and Materials (Volume 723)
• Pages: 162-166
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.723.162
• Online since: January 2015
• Authors: Wen Jian Yang*, Xiao Ming Huang, Guo Liang Xu, Xiang Kui Lv
• Keywords: 3D Rough Surface, Gauss Distribution, Laminar Flow, Metallic Gasket, Numerical Simulation

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