PUB - Comparative analysis of leakage calculations for metallic seals of ball-seat valves using the multi-asperity model and the magnification-based model

 

Im Journal "Tribology International" ist eine Veröffentlichung zum Thema "Vergleichende Analyse von Leckageberechnungen für metallische Dichtungen von Kugelsitzventilen unter Verwendung des Mehrperiodenmodells und des vergrößerungsbasierten Modells" erschienen.

01/11/2021
 

Authors: Chao Peng; Felix J.Fischer; Katharina Schmitz; Hubertus Murrenhoff

The leakage characteristics of metallic seals have a significant influence on valve performance. The contact status along the sealing zone greatly affects sealing properties, but is still not fully understood in current studies. There are mainly two different models for the seal’s contact mechanics: the multi-asperity model and the magnification-based model. This paper conducted a comparative analysis of leakage calculations for metallic seals of ball-seat valves based on the above two contact models. The test rig for measuring leakage values at different pressures has been constructed. The simulation with/without considering plastic effects is presented and verified by the experiment. The results indicate that the magnification-based model, with the consideration of plastic effects, can provide a better coincidence with experimental results.

 

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